PIR: Add unit tests for JS event handlers (#7334)

Task/Issue URL:
https://app.asana.com/1/137249556945/project/1203581873609357/task/1212381653445208?focus=true

### Description
Adds missing unit tests for the JS event handlers.

### Steps to test this PR
Ensure the unit tests pass

### UI changes
No UI changes

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Adds extensive unit tests covering PIR JS event handlers (state
transitions, side effects, pixels, retries) and fixes a handler class
name; also simplifies retry decision logic.
> 
> - **Tests (new, extensive)**:
> - `BrokerActionFailedEventHandlerTest`: verifies retry limits,
expectation-only retries for scans, failure pixel emission.
> - `BrokerStepCompletedEventHandlerTest`: validates success/failure
outcomes, email confirmation flow, stage timing, and state resets.
> - `CaptchaInfoReceivedEventHandlerTest`: asserts transaction ID
handling, next-action progression, and pixel emission for opt-out.
> - `EmailReceivedEventHandlerTest`: ensures email propagation to
`ExtractedProfile`, generated email state, pixel emission, and next
action.
> - `ErrorReceivedHandlerTest`: maps various errors to
`BrokerActionFailed` with no retry; state remains unchanged.
> - `ExecuteBrokerStepActionEventHandlerTest`: covers side effects
(`PushJsAction`, `LoadUrl`, captcha/email flows), delays, pixels, and
data sourcing.
> - `ExecuteNextBrokerStepEventHandlerTest`: starts next broker step,
emits start pixels, resets indices, completes execution when done.
> - `LoadUrlCompleteEventHandlerTest` / `LoadUrlFailedEventHandlerTest`:
handle initial/recovery URLs, advance/abort flows, and retries.
> - `RetryAwaitCaptchaSolutionEventHandlerTest` /
`RetryGetCaptchaSolutionEventHandlerTest`: increment attempts and
re-dispatch side effects.
> - `StartedEventHandlerTest`: initializes attempt ID and kicks off
initial URL load.
> - **Minor fixes**:
> - Rename `CaptchaInforReceivedEventHandler` to
`CaptchaInfoReceivedEventHandler`.
> - Simplify `shouldRetryFailedAction` with an expression `return` while
preserving behavior.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
55bc3fd. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: landomen

pir/pir-impl/src/main/java/com/duckduckgo/pir/impl/common/actions/BrokerActionFailedEventHandler.kt

@@ -101,12 +101,12 @@ class BrokerActionFailedEventHandler @Inject constructor(
             return false
         }
 
-        if (state.runType == RunType.OPTOUT || state.runType == RunType.EMAIL_CONFIRMATION) {
+        return if (state.runType == RunType.OPTOUT || state.runType == RunType.EMAIL_CONFIRMATION) {
             // for optout, for ANY action we retry at most 3 times
-            return state.actionRetryCount < MAX_RETRY_COUNT_OPTOUT
+            state.actionRetryCount < MAX_RETRY_COUNT_OPTOUT
         } else {
             // For scans, we ONLY retry once if the action is expectation
-            return (currentAction is Expectation && state.actionRetryCount < MAX_RETRY_COUNT_SCAN)
+            (currentAction is Expectation && state.actionRetryCount < MAX_RETRY_COUNT_SCAN)
         }
     }
 

…ions/CaptchaInforReceivedEventHandler.kt …tions/CaptchaInfoReceivedEventHandler.ktpir/pir-impl/src/main/java/com/duckduckgo/pir/impl/common/actions/CaptchaInforReceivedEventHandler.kt renamed to pir/pir-impl/src/main/java/com/duckduckgo/pir/impl/common/actions/CaptchaInfoReceivedEventHandler.kt pir/pir-impl/src/main/java/com/duckduckgo/pir/impl/common/actions/CaptchaInforReceivedEventHandler.kt renamed to pir/pir-impl/src/main/java/com/duckduckgo/pir/impl/common/actions/CaptchaInfoReceivedEventHandler.kt

@@ -35,7 +35,7 @@ import kotlin.reflect.KClass
     scope = AppScope::class,
     boundType = EventHandler::class,
 )
-class CaptchaInforReceivedEventHandler @Inject constructor(
+class CaptchaInfoReceivedEventHandler @Inject constructor(
     private val currentTimeProvider: CurrentTimeProvider,
     private val pirRunStateHandler: PirRunStateHandler,
 ) : EventHandler {