Fix Apple mobile tests failures in extra-platforms pipeline

[kotlarmilos]

Description

This PR fixes several failures encountered in extra-platforms pipeline.

First, it updates ZipMergedPayloadDirectory target to use `PreparePayloadDirectories, which was inlined in #123110. This should fix runtime tests on Apple mobile.

Second, there is a new failure building Native AOT tests for mobile. When generating arm64 relocations for page offsets, the NativeAOT compiler was embedding addend values directly into the instruction immediate field, but the addend value was already added into the instruction bytes. This PR changes the compiler to read the value embedded in the instruction and add that value to the reloc parameter.

Third, CoreCLR tests fail to load R2R image on tvOS only. This PR probes multi-threaded load issue by adding a mutex

[Copilot]

Pull request overview

This PR fixes a broken target dependency in the Apple mobile jobs that was introduced by PR #123110. That PR removed the PrepareMergedTestPayloadDirectories target and inlined its content into the PreparePayloadDirectories target, but left a reference to the old target name in the ZipMergedPayloadDirectory target.

Changes:

• Updated ZipMergedPayloadDirectory target's AfterTargets dependency from the removed PrepareMergedTestPayloadDirectories to the existing PreparePayloadDirectories target

[kotlarmilos]

/azp run runtime-extra-platforms

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[kotlarmilos]

/azp run runtime-extra-platforms

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.

[kotlarmilos]

/azp run runtime-extra-platforms

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[kotlarmilos]

/azp run runtime-extra-platforms

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[Copilot]

Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

[Copilot]

The regex pattern here should also handle StandaloneTestRunner markers to be consistent with lines 503 and 545. Since line 272 adds StandaloneTestRunner markers for all mobile targets (including Android), this Android-specific target should use the same pattern as the Apple mobile targets. The pattern should be: '.(MergedTestAssembly(ForStress)?(.\d+.\d+)?|StandaloneTestRunner)$'

Suggested change

	<_MergedWrapperName>$([System.Text.RegularExpressions.Regex]::Replace('%(_MergedWrapperMarker.FileName)', '\.MergedTestAssembly(ForStress)?(\.\d+\.\d+)?$', ''))</_MergedWrapperName>
	<_MergedWrapperName>$([System.Text.RegularExpressions.Regex]::Replace('%(_MergedWrapperMarker.FileName)', '\.(MergedTestAssembly(ForStress)?(\.\d+\.\d+)?|StandaloneTestRunner)$', ''))</_MergedWrapperName>

[kotlarmilos]

/azp run runtime-extra-platforms

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).