Use the new preview screen when tapping media on the room and pinned events screens. (#3736)

* Use the new TimelineMediaPreview modifier on the room and pinned timeline screens.

* Use the same presentation logic for all timeline media previews.

* Fix a bug with the detection of the timeline end.

* Send pagination requests from the media preview screen.

* Add SwiftLint to the Danger workflow (it is no longer installed on the runner).

* Put SwiftLint back on all of the GitHub runners too.

* Set the function_parameter_count lint rule to 10.

* Make sure to clean-up any previews when the coordinator is done.

* Handle the viewInRoomTimeline action more appropriately.

ElementX/Sources/Screens/PinnedEventsTimelineScreen/PinnedEventsTimelineScreenCoordinator.swift

@@ -62,6 +62,9 @@ final class PinnedEventsTimelineScreenCoordinator: CoordinatorProtocol {
             
             guard let self else { return }
             switch action {
+            case .viewInRoomTimeline(let itemID):
+                guard let eventID = itemID.eventID else { fatalError("A pinned event must have an event ID.") }
+                actionsSubject.send(.displayRoomScreenWithFocussedPin(eventID: eventID))
             case .dismiss:
                 self.actionsSubject.send(.dismiss)
             }
@@ -77,6 +80,8 @@ final class PinnedEventsTimelineScreenCoordinator: CoordinatorProtocol {
                 actionsSubject.send(.displayUser(userID: userID))
             case .displayMessageForwarding(let forwardingItem):
                 actionsSubject.send(.displayMessageForwarding(forwardingItem: forwardingItem))
+            case .displayMediaPreview(let mediaPreviewViewModel):
+                viewModel.displayMediaPreview(mediaPreviewViewModel)
             case .displayLocation(_, let geoURI, let description):
                 actionsSubject.send(.presentLocationViewer(geoURI: geoURI, description: description))
             case .viewInRoomTimeline(let eventID):
@@ -91,6 +96,10 @@ final class PinnedEventsTimelineScreenCoordinator: CoordinatorProtocol {
         }
         .store(in: &cancellables)
     }
+    
+    func stop() {
+        viewModel.stop()
+    }
         
     func toPresentable() -> AnyView {
         AnyView(PinnedEventsTimelineScreen(context: viewModel.context, timelineContext: timelineViewModel.context))