Backport security fixes from Firefox 115.3.1 to 102.15.1
Firefox is releasing 115.3.1 with at least one security fix from Chromium (1), but also another one that might be apply trivially (2):
- https://github.com/mozilla/gecko-dev/commit/07ab3c00a53c8c7a7f5440b94f2b54673ee42f80
- https://github.com/mozilla/gecko-dev/commit/4e015d207a59379564308a38cae470d5220b5937
Let's cherry-pick them also on 102.