Add support for trust-on-decrypt (API change, recognise flag on
isKeyBackupTrusted). Catch rejection on wrong passphrase / recovery
key. Fix remembering whether we are restoring with key or passphrase.
Requires https://github.com/matrix-org/matrix-js-sdk/pull/836
Only fail if there were any keys in the backup (which does mean
that the backup will always succeed if there aren't any keys which
could also be misleading, but is probably not as bad and can probably
be fixed with Trust on Decrypt).
Also cheekily fix the error message so it talks about passphrases
if you used a passphrase and recovery keys if you used a recovery key.
This takes out the old user and room settings, replacing the paths with the new dialog editions. The labs setting has been removed in order to support this change.
In addition to removing the old components outright, some older components which were only used by the settings pages have been removed. The exception is the ColorSettings component as it has a high chance of sticking around in the future.
Styles that were shared by the settings components have been broken out to dedicated sections, making it easier to remove the old styles entirely.
Some stability testing of the app has been performed to ensure the app still works, however given the scope of this change there is a possibility of some broken functionality.
This is intentionally not removing the labs flag or other supporting structures of the old settings to make a revert as easy as possible in the event that needs to happen. All of the cruft left behind (TempTab, temp styles, labs flag, old components, etc) will be removed in the very near future.
This lessens the warning for unstable-but-not-official versions while still communicating that the version is unstable. In the future, we may want to make this state dismissable.
I further tweaked the wording from Tom's in the bug report to
put passphrases first since they are supposed to be the norm
(and the correct term is "recovery passphrase").
Fixes https://github.com/vector-im/riot-web/issues/8214
