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>

libraries/voicerecorder/test/src/main/kotlin/io/element/android/libraries/voicerecorder/test/FakeVoiceRecorder.kt

@@ -55,7 +55,7 @@ class FakeVoiceRecorder(
         curRecording = File("file.ogg")
 
         timeSource += recordingDuration
-        for(i in 1..levels.size) {
+        for (i in 1..levels.size) {
             _state.emit(VoiceRecorderState.Recording(startedAt.elapsedNow(), levels.take(i)))
         }
     }
@@ -91,7 +91,6 @@ class FakeVoiceRecorder(
         )
     }
 
-
     fun assertCalls(
         started: Int = 0,
         stopped: Int = 0,