[runtime tests] Make 2 tests conditional on MT enabled

[radekdoulik]

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[Copilot]

Pull request overview

Updates two JIT regression tests to only run when the runtime supports multithreading, avoiding failures/hangs on single-threaded targets.

Changes:

• Switch b72218 from [Fact] to [ConditionalFact(...IsMultithreadingSupported)].
• Switch SyncGCHole from [Fact] to [ConditionalFact(...IsMultithreadingSupported)].

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
src/tests/JIT/Regression/CLR-x86-JIT/v2.1/b72218/b72218.cs	Makes the test conditional on multithreading support.
src/tests/JIT/Regression/CLR-x86-JIT/V1.2-M01/b08046cs/SyncGCHole.cs	Makes the test conditional on multithreading support.

[Copilot]

Pull request overview

This PR updates a pair of JIT regression tests to be skipped on platforms/runtimes where multithreading isn’t supported, avoiding failures due to Thread usage in single-threaded environments.

Changes:

• Add using TestLibrary; to access PlatformDetection.
• Replace [Fact] with [ConditionalFact(typeof(PlatformDetection), nameof(PlatformDetection.IsMultithreadingSupported))] on two tests.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
src/tests/JIT/Regression/CLR-x86-JIT/v2.1/b72218/b72218.cs	Makes the test conditional on multithreading support via PlatformDetection.
src/tests/JIT/Regression/CLR-x86-JIT/V1.2-M01/b08046cs/SyncGCHole.cs	Makes the test conditional on multithreading support via PlatformDetection.

[Copilot]

Pull request overview

Updates two legacy JIT regression tests that create threads so they only run when multithreading is supported (e.g., skipping single-threaded WASM/WASI environments).

Changes:

• Replace [Fact] with [ConditionalFact(...IsMultithreadingSupported)] on two tests that create Threads.
• Add using TestLibrary; to access PlatformDetection.

Reviewed changes

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

File	Description
src/tests/JIT/Regression/CLR-x86-JIT/v2.1/b72218/b72218.cs	Makes the test conditional on PlatformDetection.IsMultithreadingSupported.
src/tests/JIT/Regression/CLR-x86-JIT/V1.2-M01/b08046cs/SyncGCHole.cs	Makes the test conditional on PlatformDetection.IsMultithreadingSupported.