Improve cancel behavior in profile settings

[vincentdelitz]

Background When inside profile settings and not having made any changes, getting out of the menu is only possible through the bottom tab menu.

TODO

• [ ] Add a "Cancel" button below the "Sign out. Goodbye" element that brings you back to the previous screen.
• [ ] When clicking on the gear icon in the top right, the same behavior should apply (go back to the previous screen):

[vincentdelitz]

cc @incorbador