Add polyfill for TimeSpan.FromMilliseconds(long, [long])

[Tyrrrz]

No description provided.

[Copilot]

Pull Request Overview

This PR adds polyfills for the TimeSpan.FromMilliseconds method overloads introduced in .NET 9.0 and .NET 10.0. The .NET 9.0 version adds support for specifying both milliseconds and microseconds parameters, while the .NET 10.0 version provides a long-based overload that delegates to the two-parameter version.

Key Changes

• Added polyfill for TimeSpan.FromMilliseconds(long milliseconds, long microseconds) in Net90
• Added polyfill for TimeSpan.FromMilliseconds(long milliseconds) in Net100
• Added basic test coverage for both implementations

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
PolyShim/Net90/TimeSpan.cs	Implements two-parameter FromMilliseconds polyfill for .NET 9.0
PolyShim/Net100/TimeSpan.cs	Implements single-parameter FromMilliseconds polyfill for .NET 10.0
PolyShim.Tests/Net90/TimeSpanTests.cs	Adds test for two-parameter overload
PolyShim.Tests/Net100/TimeSpanTests.cs	Adds test for single-parameter overload

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[Copilot]

Pull Request Overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 0.00%. Comparing base (80bd7dd) to head (776660f).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@     Coverage Diff      @@
##   master   #43   +/-   ##
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