Fix: Check doResolveProxy

[chrmarti]

microsoft/vscode#298236

[Copilot]

Pull request overview

This PR fixes WebSocket proxy handling so the WebSocket patch respects the doResolveProxy and addCerts flags, and adjusts a flaky proxy-auth test to assert the 407 response status directly.

Changes:

• Pass doResolveProxy / addCerts into the WebSocket ProxyDispatcher and use them when resolving proxy + loading extra certs.
• Update the “missing auth” proxy test to use https.request and assert res.statusCode === 407 without relying on body end.
• Bump version to 0.39.1 and document the fixes in the changelog.

Reviewed changes

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

File	Description
tests/test-client/src/proxy.test.ts	Reworks the 407-missing-auth test to assert status code directly to avoid intermittent stream completion issues.
src/index.ts	Fixes WebSocket ProxyDispatcher to honor doResolveProxy/addCerts from createWebSocketPatch.
package.json	Version bump to 0.39.1.
CHANGELOG.md	Adds 0.39.1 entry describing the WebSocket and test fixes.

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