fix #https://github.com/microsoft/vscode-dev/issues/1366

[sandy081]

fix https://github.com/microsoft/vscode-dev/issues/1366

[Copilot]

Pull request overview

Adjusts extension version filtering so platform-specific builds only replace universal/undefined builds when they share the same version number (preventing a lower platform-specific version from overriding a higher universal version), addressing microsoft/vscode-dev#1366.

Changes:

• Update filterLatestExtensionVersionsForTargetPlatform to only prefer a target-platform-specific version over universal/undefined when the version strings match.
• Add clarifying JSDoc explaining the filtering/replacement rules and input ordering assumptions.
• Update and expand unit tests to cover the corrected replacement behavior and a real-world mixed universal/platform-specific scenario.

Reviewed changes

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

File	Description
src/vs/platform/extensionManagement/common/extensionGalleryService.ts	Tightens replacement logic to require matching version numbers before preferring platform-specific builds; adds documentation for the behavior.
src/vs/platform/extensionManagement/test/common/extensionGalleryService.test.ts	Updates/extends tests to validate that higher universal versions are not replaced by lower platform-specific ones, and that same-version replacement still works.