Disable broken UI Tests and remove navigation. (#577)

Add locale to signalling service name.
Type strings character by character.
Add a default test timeout of 1 minute.

* Directly set UI Tests screens as the root screen.

Speeds up test runs by removing scrolling and searching for buttons.

* Parallelise test runs from Xcode (not fastlane).

* Disable signalling based tests.

UITests/Sources/UserSessionScreenTests.swift

@@ -22,8 +22,7 @@ class UserSessionScreenTests: XCTestCase {
     func testUserSessionFlows() async throws {
         let roomName = "First room"
         
-        let app = Application.launch()
-        app.goToScreenWithIdentifier(.userSessionScreen)
+        let app = Application.launch(.userSessionScreen)
 
         app.assertScreenshot(.userSessionScreen, step: 1)