Fix keyboard showing after dialog dismissed

When dialog for creating user was dismissed with keyboard being displayed, the keyboard stayed on the screen and could not be released due to incorrect list of methods called on dialog dismissal. This CL topic fixes onDismiss() behaviour of this dialog. Videos of current behaviour and behaviour after fixed are attached to the bug.

Bug: 291865725
Test: atest UserSettingsTest
Change-Id: Ib3ade3de9228c8ba24e7ac2e235aaeec45efbe4e