chore: bump electron@39.8.3

[deepak1556]

Reland #302875 with additional fix for crash during certificate parsing on macOS

Refs https://github.com/microsoft/vscode-internalbacklog/issues/7003#issuecomment-4076672037

cc @chrmarti

[Copilot]

Pull request overview

Updates the repo’s Electron dependency from 39.8.2 to 39.8.3 (a reland of #302875), aligning build metadata and artifact verification inputs with the new Electron version.

Changes:

• Bump electron dependency to 39.8.3 in package.json and package-lock.json.
• Update Electron component metadata in cgmanifest.json to the 39.8.3 tag/commit.
• Refresh Electron artifact SHA256s in build/checksums/electron.txt and update build IDs used by npmrc configs.

Reviewed changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
remote/.npmrc	Updates Node MS build ID used by remote build/pipeline flows.
package.json	Bumps Electron npm dependency to 39.8.3.
package-lock.json	Locks Electron to 39.8.3 with updated resolved URL/integrity.
cgmanifest.json	Updates Electron component version/tag/commit for compliance tracking.
build/checksums/electron.txt	Replaces checksums to match Electron 39.8.3 artifacts.
.npmrc	Updates Electron headers target to 39.8.3.