This padding only one side made it impossible to center things in the dialog.
Since the dialog also has nice spacing without the padding, this change removes
it.
Fixes https://github.com/vector-im/riot-web/issues/7862.
Adds a New Recovery Method dialog which is shown when key backup fails because
of a version mismatch / version not found error.
The set up button in the dialog currently only marks a device as verified (via a
verification prompt) instead of the eventual restore and cross-sign flow, since
those pieces don't exist yet.
Signed-off-by: J. Ryan Stinnett <jryans@gmail.com>
