keepassxc: 2.4.0 -> 2.4.1

KeePassXC has a new release. Changelog at
https://github.com/keepassxreboot/keepassxc/releases/tag/2.4.1.

Additionally, some cleanup:

- Alphabetize inputs for better future diffs
- Drop a no-longer-relevant patch
- Fixup removed and missing cmake flags
- Update description to reference correct browser extension