[MihaZupan] Add a dedicated Ascii.IsValid path

[MihuBot]

Build completed in 47 minutes.
dotnet/runtime#84881

CoreLib diffs

Error: Could not find a part of the path '/runner/jit-diffs/corelib/dasmset_2/base'.

Frameworks diffs

Diffs

Found 23 files with textual diffs.

Summary of Code Size diffs:
(Lower is better)

Warning: the base metric is 0, the diff metric is 0, have you used a release version?


0 total files with Code Size differences (0 improved, 0 regressed), 23 unchanged.

0 total methods with Code Size differences (0 improved, 0 regressed), 0 unchanged.

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Artifacts:

• diff-corelib.txt (0 KB)
• diff-frameworks.txt (0 KB)
• jit-diffs-corelib.zip (9 MB)
• jit-diffs-frameworks.zip (44 KB)
• build-artifacts-main.zip (111 MB)
• build-artifacts-pr.zip (113 MB)
• build-logs.txt (898 KB)