Bug 1807232 - Revert GeckoView to previous version to fix startup crash

[Mugurell]

@amocirean helped confirm that this backout fixes the startup crash seen on Fenix - mozilla-mobile/fenix#28297.
Also confirmed that with the current (newer) version of GV sample-browser crashes also but latest Nightly of Focus and latest GeckoView-example apps are not crashing so for a deeper fix we need to investigate what Fenix does that trigger the crash.

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[mergify]

This pull request has conflicts when rebasing. Could you fix it @Mugurell? 🙏

[gabrielluong]

I am gonna close this since we already discussed that we can't revert GV versions.