Add project exclusion for System.Text.Json tests

[MichalStrehovsky]

Needed to make outerloops green again.

Cc @dotnet/ilc-contrib

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🤖 Copilot Code Review — PR #128344

Note

This review was generated by Copilot.

Holistic Assessment

Motivation: Justified. Issue #128286 documents consistent Access Violation crashes in System.Text.Json.SourceGeneration.Roslyn4.4.Tests across multiple NativeAOT legs (windows-arm64, windows-x64, windows-x86, osx-x64). Disabling the test to unblock CI outerloops is a standard practice in this repo.

Approach: Correct — adding an unconditional ProjectExclusions entry under the TestNativeAot guard with a tracking issue link follows the established pattern in this file.

Summary: ✅ LGTM. Simple, well-motivated test exclusion that follows existing conventions.

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Detailed Findings

💡 Redundant existing exclusion

The new unconditional exclusion (line 409) for issue #128286 makes the existing conditional exclusion (lines 412-413) for issue #119380 (osx/arm64 only) redundant — the same .csproj is now excluded on all NativeAOT configurations regardless. Consider removing the #119380 entry to avoid confusion, or leave it as-is so it's easy to re-enable the broader exclusion independently once #128286 is fixed. Either way, this is non-blocking.

✅ Correctness

• The exclusion path matches the existing entry for the same project on line 412.
• The issue link is correct and references a real, open tracking issue.
• Placement within the correct ItemGroup condition is correct.

Generated by Code Review for issue #128344 · ● 1.2M · ◷

[MichalStrehovsky]

/ba-g relevant legs already passed, needed to unblock outerloop testing