Rebase Tor Browser stable onto 140.9.0esr

⤵️ Rebase Stable

Bookkeeping

• Link this issue to the appropriate Release Prep issue.

Rebase

The step-by-step rebase process is detailed on the Rebase Process wiki page. Refer to it for detailed instructions on how to perform each step.

• Rebase Tor Browser
  • Prepare the rebase
    • Get the Firefox tag
    • Freeze the current default branch
    • Create the target branch
  • Do the rebase
    • Cherry-pick commits until tor-browser-...-build1
    • Squash (git rebase --autosquash FIREFOX_...-build1)
    • Cherry-pick the remaining commits
    • Reorder commits
  • Merge
    • Perform a self-review (git range-diff + diff of diffs)
    • Run linters
  • Tag
    • tor-browser-...-build1
    • base-browser-...-build1

---