Don't report Node deprecation warnings as script errors

[sean-mcmanus]

Summary

yarn install-and-copy-binaries-for-test printed a red ERROR: for a harmless Node [DEP0169] url.parse() deprecation warning that the VS Code CLI writes to stderr, even though the extension installed successfully and the binaries were copied. The script called error() unconditionally whenever the --install-extension subprocess produced any stderr output.

runVSCodeCommand only resolves when the command succeeds (it throws VSCodeCommandError on a non-zero exit), so its stderr here is inherently non-fatal (e.g. Node deprecation warnings). It is now logged with warn() instead of error(), which handles DEP0169 and any future deprecation warning without an allow-list.

The same DEP0169 pattern is also added to the test.ts filterStdio() deny-list, alongside the existing DEP0005 entry, so the yarn test path stays quiet as well.

This PR was created by Copilot with Claude Opus 4.8 (in VS Code). Any PR comments starting with Copilot says: are generated by Copilot.

[Copilot]

Pull request overview

This PR adjusts the extension’s test/CI helper scripts so that non-fatal stderr output (notably Node deprecation warnings like DEP0169) is not surfaced as a hard error when the underlying VS Code CLI command succeeds. This reduces noisy “ERROR” log output while keeping genuine failures unchanged.

Changes:

• Treat successful runVSCodeCommand stderr output as a warning (not an error) in installAndCopyBinaries.ts.
• Suppress DEP0169 deprecation warning lines in test.ts stdout/stderr filtering to keep yarn test output clean.

Reviewed changes

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

File	Description
Extension/.scripts/test.ts	Adds DEP0169 to the stdio filter deny-list to suppress harmless Node deprecation output during tests.
Extension/.scripts/installAndCopyBinaries.ts	Logs runVSCodeCommand stderr as warn() (non-fatal) rather than error() when the command succeeds.

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