* replace NavigationStack with ElementNavigationStack to allow the content to be rendered without a NavigationStack in a11y tests
* fix a11y tests
* update xcodeproject
* swiftformat fix
* use iOS 26.1 for CI
* use a wrapper to solve the issue for a11y tests
* ElementNavigationStack only uses the trick in DEBUG mode, and added a swiftlint rule to prevent the usage of NavigationStack
* Lock the LinkNewDeviceScreen to portrait.
* Add cancel buttons to the QR Code errors and handle cancel/startOver correctly.
* Use the shared QRCodeErrorView in the LinkNewDeviceScreen.
* Clarify the different QR Error/ErrorStates a bit more.
* Update snapshots.
* Adds the remaining parts for showing/scanning a QR code to link a new device.
* Refactor the QRCodeLoginService to work the same way as the LinkNewDeviceService.
* Simplify QR errors even more and use the correct error state for deviceAlreadySignedIn.
* Remove the pre-defined padding on TitleAndIcon and use it in the QRCodeLoginScreen too.
* Update FullscreenDialog to allow different horizontal padding in each section.
* Tidy-up Rust to Swift mapping.
* Refactor out a dedicated QRCodeErrorView.
* Use the new QRCodeErrorView for most error state snapshots.
* Simplify QRCodeErrorView structure.
Also updates the background to match the designs.
* Fix a small compile error in the unit tests.
