Various fixes

submodules/TelegramUI/Components/CameraScreen/Sources/MediaAssetsContext.swift

@@ -95,8 +95,13 @@ public final class MediaAssetsContext: NSObject, PHPhotoLibraryChangeObserver {
         )
     }
     
-    public func requestMediaAccess() -> Void {
+    public func requestMediaAccess(completion: @escaping () -> Void = {}) -> Void {
         PHPhotoLibrary.requestAuthorization { [weak self] status in
+            Queue.mainQueue().async {
+                if case .authorized = status {
+                    completion()
+                }
+            }
             self?.mediaAccessSink.putNext(status)
         }
     }