Run unit tests under Windows

[matthargett]

attempt to get some early visibility into pathing or other issues. should "just work" with this subset of tests.

[changeset-bot]

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Latest commit: 24c930e

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[Copilot]

Pull Request Overview

This PR aims to improve file permission handling and path normalization in the node API modules to ensure unit tests run properly on Windows. Key changes include:

• Refactoring the file readability check in isNodeApiModule with a new helper function (isReadableSync) and improved error messaging.
• Adjustments to normalize module paths for cross-platform compatibility.
• Updates to unit tests to simulate changes in file permission behavior on Windows using fswin, plus the addition of a dedicated Windows test workflow.

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

File	Description
packages/react-native-node-api-modules/src/node/path-utils.ts	Enhanced file readability checking and path normalization for cross-platform support.
packages/react-native-node-api-modules/src/node/path-utils.test.ts	Added helper functions to simulate removal and restoration of read permissions on Windows.
packages/react-native-node-api-modules/package.json	Added fswin dependency for Windows file attribute management.
.github/workflows/check.yml	Introduced a Windows test job to run the adjusted test suite.

[kraenhansen]

Added a few minor suggestions - pick what you feel like and merge at will 🙂