Exclude electron/get's ELECTRON_GET_USE_PROXY variable from exclusion

[1D17B65E]

ELECTRON_GET_USE_PROXY is used in the Electron download performed by electron/get to enable proxy rerouting. It's very confusing that the download doesn't work when the download is run from an integrated terminal session. Since the variable doesn't have an effect on running Electron instances (especially the one hosting VS Code itself), it's safe to exclude it from the exclusion.

Resolves #324748.

[1D17B65E]

@microsoft-github-policy-service agree

[Copilot]

Pull request overview

This PR fixes issue #324748 by allowing the ELECTRON_GET_USE_PROXY environment variable to pass through VS Code's process environment sanitization. This variable is used by electron/get to enable proxy rerouting during Electron downloads; previously it was stripped in integrated terminal sessions (since it matched the ELECTRON_* removal pattern), causing confusing download failures. Because the variable has no effect on running Electron instances, it is safe to preserve.

Changes:

• Updated the ELECTRON_* removal regex in sanitizeProcessEnvironment to use a negative lookahead that excludes ELECTRON_GET_USE_PROXY.
• Extended the unit test to cover the newly preserved variable and updated the expected key count.

Reviewed changes

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

File	Description
src/vs/base/common/processes.ts	Adds a negative lookahead to the ELECTRON_* removal pattern so ELECTRON_GET_USE_PROXY is retained during environment sanitization.
src/vs/base/test/common/processes.test.ts	Adds ELECTRON_GET_USE_PROXY to the test env, asserts it is preserved, and updates the expected remaining-key count from 3 to 4.