fix(combobox): Revert some styles in combobox form element and faux input (#4822)

* add width: 100% to slds-combobox__form-element

* remove faux-input width, remove display:flex on slds-combobox__form-element

* add release notes

Author: Dottenpixel

RELEASENOTES.md

@@ -1,6 +1,17 @@
 <!-- Release notes authoring guidelines: http://keepachangelog.com/ -->
 <!-- !!! THIS FILE IS AUTO-GENERATED !!! DO NOT EDIT THIS FILE MANUALLY !!! -->
 
+## Release 2.16.2 - September 22, 2021
+
+## Components
+### [Combobox](https://www.lightningdesignsystem.com/components/combobox)
+## Removed
+- Removed `display: flex` property from `.slds-combobox__form-element` which was added recently for ARIA 1.2 guidance.
+
+### [Input](https://www.lightningdesignsystem.com/components/input)
+## Removed
+- Removed `width` property from `.slds-input_faux` which was added recently for ARIA 1.2 guidance.
+
 ## Release 2.16.1 - August 25, 2021
 
 ## Release 2.16.0 - August 12, 2021

ui/components/combobox/RELEASENOTES.md

@@ -4,6 +4,12 @@
 
 <!-- ## [Unreleased] -->
 
+## 2.16.2
+
+## Removed
+
+- Removed `display: flex` property from `.slds-combobox__form-element` which was added recently for ARIA 1.2 guidance.
+
 ## 2.16.0
 
 ### Changed

ui/components/combobox/base/_index.scss

@@ -78,7 +78,6 @@
  * @restrict .slds-combobox > div
  */
 .slds-combobox__form-element {
-  display: flex;
   flex: 1 1 auto;
 }
 

ui/components/input/RELEASENOTES.md

@@ -4,6 +4,12 @@
 
 <!-- ## [Unreleased] -->
 
+## 2.16.2
+
+## Removed
+
+- Removed `width` property from `.slds-input_faux` which was added recently for ARIA 1.2 guidance.
+
 ## 2.16.0
 
 ### Added

ui/components/input/base/_index.scss

@@ -120,10 +120,6 @@
   flex: 1 1 auto;
   text-align: left;
 
-  @include mq-small-min {
-    width: rem(146px); // estimated magic number to match input's inherent width in Chrome
-  }
-
   &.slds-is-disabled {
     @include input-disabled;
   }