cleanup; comment

apps/ios/Shared/Views/ChatList/ChatListView.swift

@@ -46,13 +46,6 @@ struct ChatListView: View {
         }
     }
 
-    var isUserPickerSheetPresented: Binding<Bool> {
-        Binding(
-            get: { activeUserPickerSheet != nil }, 
-            set: { if !$0 { activeUserPickerSheet = nil } }
-        )
-    }
-
     private var viewBody: some View {
         ZStack(alignment: oneHandUI ? .bottomLeading : .topLeading) {
             NavStackCompat(

apps/ios/Shared/Views/Helpers/SheetWithDetents.swift

@@ -26,7 +26,9 @@ extension View {
     }
 }
 
-/// iOS 15 Compatible detents
+/// iOS 15 Compatible detents.
+/// Defines the fallback thresholds,
+/// since fractional and constant height sheets are unavailable.
 enum SheetDetent {
     case medium
     case large