Detect when the running build is itself a prerelease (e.g. 1.3.17-rc.1)
and auto-enable the RC feed in setupAutoUpdater. Without this, the
default generic /releases/latest/download/ feed only advertises stable
releases, so "Check for Updates" from a prerelease build could never
find the next RC (e.g. 1.3.17-rc.2) unless the user knew to Shift-click.
* fix(renderer): fix unescaped quote lint error in GeneralPane
* refactor: replace allowPrerelease workaround with generic feed URL
Use electron-updater's generic provider pointed at GitHub's
/releases/latest/download/ so the manifest always comes from the latest
stable release. This eliminates the client-side RC filtering, the GitHub
releases API fallback, and the manual-download path entirely.
Brennan BensonandOrca
Neil
Jinjing