[Resources.ProcessRuntime] Allow preview versions

[martincostello]

Changes

Update assertion to not fail if a preview or release candidate version of .NET is being used.

See #2822.

Merge requirement checklist

• CONTRIBUTING guidelines followed (license requirements, nullable enabled, static analysis, etc.)
• Unit tests added/updated
• Appropriate CHANGELOG.md files updated for non-trivial changes
• Changes in public API reviewed (if applicable)

[Copilot]

Pull Request Overview

This PR updates the test assertion for ProcessRuntime attributes to support preview and release candidate .NET versions.

• Updated the regex in ProcessRuntimeDetectorTests.cs to correctly match preview and RC versions.
• Ensured compatibility with the test for .NET version string formatting.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.33%. Comparing base (71655ce) to head (10fb717).
Report is 882 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2823      +/-   ##
==========================================
+ Coverage   73.91%   83.33%   +9.41%     
==========================================
  Files         267        4     -263     
  Lines        9615       60    -9555     
==========================================
- Hits         7107       50    -7057     
+ Misses       2508       10    -2498     

Flag	Coverage Δ
unittests-Resources.Process	100.00% <ø> (?)
unittests-Resources.ProcessRuntime	78.26% <ø> (?)

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see 265 files with indirect coverage changes

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[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 7 days.

[Kielek]

@martincostello, thank you. Merging.