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/Services/Timeline/TimelineController/MockTimelineController.swift

@@ -74,8 +74,11 @@ class MockTimelineController: TimelineControllerProtocol {
         focusLiveCallCount += 1
         callbacks.send(.isLive(true))
     }
-
+    
+    private(set) var paginateBackwardsCallCount = 0
     func paginateBackwards(requestSize: UInt16) async -> Result<Void, TimelineControllerError> {
+        paginateBackwardsCallCount += 1
+        
         paginationState = PaginationState(backward: .paginating, forward: .timelineEndReached)
         
         if client == nil {
@@ -85,9 +88,10 @@ class MockTimelineController: TimelineControllerProtocol {
         return .success(())
     }
     
+    private(set) var paginateForwardsCallCount = 0
     func paginateForwards(requestSize: UInt16) async -> Result<Void, TimelineControllerError> {
-        // try? await simulateForwardPagination()
-        .success(())
+        paginateForwardsCallCount += 1
+        return .success(())
     }
     
     func sendReadReceipt(for itemID: TimelineItemIdentifier) async {