EnC: Block additions to MethodImpl table when targeting .NET Framework (#81304)

Block additions to MethodImpl table when targeting .NET Framework. 
The EnC impl in .NET Framework doesn't handle them correctly.

Fixes https://devdiv.visualstudio.com/DevDiv/_workitems/edit/2631743 and
https://devdiv.visualstudio.com/DevDiv/_workitems/edit/1452066/

Public API change: #81305

Author: tmat

src/Compilers/CSharp/Portable/CSharpResources.resx

@@ -1799,6 +1799,9 @@ If such a class is used as a base class and if the deriving class defines a dest
   <data name="ERR_DllImportOnInvalidMethod" xml:space="preserve">
     <value>The DllImport attribute must be specified on a method marked 'extern' that is either 'static' or an extension member</value>
   </data>
+  <data name="ERR_EncUpdateRequiresEmittingExplicitInterfaceImplementationNotSupportedByTheRuntime" xml:space="preserve">
+    <value>Update requires emitting explicit interface implementation, which is not supported by the runtime without restarting the application.</value>
+  </data>
   <data name="ERR_EncUpdateFailedMissingSymbol" xml:space="preserve">
     <value>Cannot emit update; {0} '{1}' is missing.</value>
   </data>

src/Compilers/CSharp/Portable/Emitter/EditAndContinue/PEDeltaAssemblyBuilder.cs

@@ -78,6 +78,7 @@ public PEDeltaAssemblyBuilder(
         public override SymbolChanges? EncSymbolChanges => _changes;
         public override EmitBaseline PreviousGeneration => _changes.DefinitionMap.Baseline;
         public override bool FieldRvaSupported => _options.EmitFieldRva;
+        public override bool MethodImplSupported => _options.MethodImplEntriesSupported;
 
         internal override Cci.ITypeReference EncTranslateLocalVariableType(TypeSymbol type, DiagnosticBag diagnostics)
         {

src/Compilers/CSharp/Portable/Emitter/Model/PEAssemblyBuilder.cs

@@ -693,6 +693,7 @@ internal sealed class PEAssemblyBuilder(
         public override EmitBaseline? PreviousGeneration => null;
         public override SymbolChanges? EncSymbolChanges => null;
         public override bool FieldRvaSupported => true;
+        public override bool MethodImplSupported => true;
 
         public override INamedTypeSymbolInternal? TryGetOrCreateSynthesizedHotReloadExceptionType()
             => null;

src/Compilers/CSharp/Portable/Emitter/Model/PENetModuleBuilder.cs

@@ -40,6 +40,7 @@ protected override void AddEmbeddedResourcesFromAddedModules(ArrayBuilder<Cci.Ma
         public override EmitBaseline? PreviousGeneration => null;
         public override SymbolChanges? EncSymbolChanges => null;
         public override bool FieldRvaSupported => true;
+        public override bool MethodImplSupported => true;
 
         public override INamedTypeSymbolInternal? TryGetOrCreateSynthesizedHotReloadExceptionType()
             => null;

src/Compilers/CSharp/Portable/Errors/ErrorCode.cs

@@ -2444,6 +2444,7 @@ internal enum ErrorCode
         ERR_UnexpectedArgumentListInBaseTypeWithoutParameterList = 9343,
         ERR_EqualityOperatorInPatternNotSupported = 9344,
         ERR_InequalityOperatorInPatternNotSupported = 9345,
+        ERR_EncUpdateRequiresEmittingExplicitInterfaceImplementationNotSupportedByTheRuntime = 9346,
 
         // Note: you will need to do the following after adding errors:
         //  1) Update ErrorFacts.IsBuildOnlyDiagnostic (src/Compilers/CSharp/Portable/Errors/ErrorFacts.cs)

src/Compilers/CSharp/Portable/Errors/ErrorFacts.cs

@@ -641,6 +641,10 @@ or ErrorCode.ERR_DataSectionStringLiteralHashCollision
                 or ErrorCode.ERR_UnsupportedFeatureInRuntimeAsync
                 or ErrorCode.ERR_NonTaskMainCantBeAsync
                 or ErrorCode.ERR_FunctionPointerTypesInAttributeNotSupported
+                or ErrorCode.ERR_EncUpdateFailedMissingSymbol
+                or ErrorCode.ERR_EncNoPIAReference
+                or ErrorCode.ERR_EncReferenceToAddedMember
+                or ErrorCode.ERR_EncUpdateRequiresEmittingExplicitInterfaceImplementationNotSupportedByTheRuntime
                     // Update src\Features\CSharp\Portable\Diagnostics\LanguageServer\CSharpLspBuildOnlyDiagnostics.cs
                     // and TestIsBuildOnlyDiagnostic in src\Compilers\CSharp\Test\Syntax\Diagnostics\DiagnosticTest.cs
                     // whenever new values are added here.
@@ -1609,7 +1613,6 @@ or ErrorCode.WRN_InvalidVersionFormat
                 or ErrorCode.ERR_NoCorrespondingArgument
                 or ErrorCode.ERR_ResourceFileNameNotUnique
                 or ErrorCode.ERR_DllImportOnGenericMethod
-                or ErrorCode.ERR_EncUpdateFailedMissingSymbol
                 or ErrorCode.ERR_ParameterNotValidForType
                 or ErrorCode.ERR_AttributeParameterRequired1
                 or ErrorCode.ERR_AttributeParameterRequired2
@@ -1649,11 +1652,9 @@ or ErrorCode.ERR_FixedBufferTooManyDimensions
                 or ErrorCode.ERR_CantReadConfigFile
                 or ErrorCode.ERR_BadAwaitInCatchFilter
                 or ErrorCode.WRN_FilterIsConstantTrue
-                or ErrorCode.ERR_EncNoPIAReference
                 or ErrorCode.ERR_LinkedNetmoduleMetadataMustProvideFullPEImage
                 or ErrorCode.ERR_MetadataReferencesNotSupported
                 or ErrorCode.ERR_InvalidAssemblyCulture
-                or ErrorCode.ERR_EncReferenceToAddedMember
                 or ErrorCode.ERR_MutuallyExclusiveOptions
                 or ErrorCode.ERR_InvalidDebugInfo
                 or ErrorCode.WRN_UnimplementedCommandLineSwitch

src/Compilers/CSharp/Portable/Errors/MessageProvider.cs

@@ -253,6 +253,7 @@ public override void ReportDuplicateMetadataReferenceWeak(DiagnosticBag diagnost
         public override int ERR_InvalidDebugInfo => (int)ErrorCode.ERR_InvalidDebugInfo;
         public override int ERR_FunctionPointerTypesInAttributeNotSupported => (int)ErrorCode.ERR_FunctionPointerTypesInAttributeNotSupported;
         public override int ERR_DataSectionStringLiteralHashCollision => (int)ErrorCode.ERR_DataSectionStringLiteralHashCollision;
+        public override int ERR_EncUpdateRequiresEmittingExplicitInterfaceImplementationNotSupportedByTheRuntime => (int)ErrorCode.ERR_EncUpdateRequiresEmittingExplicitInterfaceImplementationNotSupportedByTheRuntime;
 
         // Generators:
         public override int WRN_GeneratorFailedDuringInitialization => (int)ErrorCode.WRN_GeneratorFailedDuringInitialization;