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/Timeline/TimelineViewModel.swift

@@ -565,10 +565,8 @@ class TimelineViewModel: TimelineViewModelType, TimelineViewModelProtocol {
     }
     
     private func slashCommand(message: String) -> SlashCommand? {
-        for command in SlashCommand.allCases {
-            if message.starts(with: command.rawValue) {
-                return command
-            }
+        for command in SlashCommand.allCases where message.starts(with: command.rawValue) {
+            return command
         }
         return nil
     }