Update plugin ktlint to v12.1.0 (#2200)

* Update plugin ktlint to v12.1.0

* Run `./gradlew ktlintFormat` and fix some issues manually.

* Fix other issues reproted by Ktlint

* Limit false positives, KtLint removes unnecessary curly brace in String templates.

* Remove useless Unit

* Minor improvements over ktlint changes

* Restore `AlertDialogContent` behaviour

* Update screenshots

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Benoit Marty <benoit@matrix.org>
Co-authored-by: Jorge Martín <jorgem@element.io>
Co-authored-by: ElementBot <benoitm+elementbot@element.io>

services/toolbox/api/src/main/kotlin/io/element/android/services/toolbox/api/sdk/BuildVersionSdkIntProvider.kt

@@ -32,7 +32,9 @@ interface BuildVersionSdkIntProvider {
     fun <T> whenAtLeast(version: Int, result: () -> T): T? {
         return if (get() >= version) {
             result()
-        } else null
+        } else {
+            null
+        }
     }
 
     @ChecksSdkIntAtLeast(parameter = 0)