Bug 40565: lock security.tls.version.enable-deprecated

Merge Info

• Resolves Issue: #40565 (closed)
• Backport Timeline:
  • Immediate (critical bug fix or other major blocker)
  • Next Minor Stable Release (patchset that needs to be verified in nightly before backport)
  • Eventually (patchset that needs to be verified in alpha before backport)
  • No Backport (patchset for the next major stable)
• Upstream Merging:
  • Merge to base-browser (typically !fixups to patches in the base-browser branch, though sometimes new patches as well)
• Issue Tracking
  • Prepare alpha release 12.5a3

Change Description