A bunch of random tweaks. (#3317)

- Fix warning on single case enum.
- Remove unused subjects.
- Fix a lint warning.
- Remove unused success value.
- Fix warning about position of try await.
- Add a note about the common tracing configuration.
- Show an indicator when resolving a send failure fails.
- Make sure the whole row is clickable in the GlobalSearchScreen.

ElementX/Sources/Screens/GlobalSearchScreen/View/GlobalSearchScreen.swift

@@ -23,6 +23,7 @@ struct GlobalSearchScreen: View {
                     GlobalSearchScreenListRow(room: room, context: context)
                         .listRowBackground(backgroundColor(for: room))
                         .listRowInsets(.init())
+                        .contentShape(.rect)
                         .onTapGesture {
                             context.send(viewAction: .select(roomID: room.id))
                         }