Add missing screen level mod application settings for some screens

Closes #7480. But based on discussion in there this solution may change.

osu.Game/Screens/Import/FileImportScreen.cs

@@ -23,6 +23,8 @@ namespace osu.Game.Screens.Import
     {
         public override bool HideOverlaysOnEnter => true;
 
+        public override bool AllowTrackAdjustments => false;
+
         private OsuFileSelector fileSelector;
         private Container contentContainer;
         private TextFlowContainer currentFileText;