address review comments

.../kotlin/androidx/compose/material/OutlinedTextFieldExt.kt

...otlin/org/briarproject/briar/desktop/login/ErrorScreen.kt

...org/briarproject/briar/desktop/login/ErrorSubViewModel.kt

...tlin/org/briarproject/briar/desktop/login/FormScaffold.kt

...otlin/org/briarproject/briar/desktop/login/LoadingView.kt

...otlin/org/briarproject/briar/desktop/login/LoginScreen.kt

...org/briarproject/briar/desktop/login/LoginSubViewModel.kt

...rg/briarproject/briar/desktop/login/RegistrationScreen.kt

...arproject/briar/desktop/login/RegistrationSubViewModel.kt

...lin/org/briarproject/briar/desktop/login/StartupScreen.kt

.../org/briarproject/briar/desktop/login/StartupViewModel.kt

...lin/org/briarproject/briar/desktop/login/StrengthMeter.kt

...org/briarproject/briar/desktop/settings/SettingsScreen.kt

...ain/kotlin/org/briarproject/briar/desktop/ui/Constants.kt

...tlin/org/briarproject/briar/desktop/utils/PreviewUtils.kt

src/main/resources/strings/BriarDesktop.properties