Hide video controls in gallery if loading fails

Closes #546

Packages/GalleryVC/Sources/GalleryVC/Content/VideoGalleryContentViewController.swift

@@ -20,6 +20,7 @@ open class VideoGalleryContentViewController: UIViewController, GalleryContentVi
     private var statusObservation: NSKeyValueObservation?
     private var rateObservation: NSKeyValueObservation?
     private var hideControlsWorkItem: DispatchWorkItem?
+    private var isShowingError = false
     
     public init(url: URL, caption: String?) {
         self.url = url
@@ -90,12 +91,15 @@ open class VideoGalleryContentViewController: UIViewController, GalleryContentVi
                     self.container?.setGalleryContentLoading(false)
                     self.showErrorView(error)
                     self.statusObservation = nil
+                    self.overlayVC.setVisible(false)
                 }
             }
         })
     }
     
     private func showErrorView(_ error: any Error) {
+        isShowingError = true
+        
         let image = UIImageView(image: UIImage(systemName: "exclamationmark.triangle.fill")!)
         image.tintColor = .secondaryLabel
         image.contentMode = .scaleAspectFit
@@ -158,7 +162,7 @@ open class VideoGalleryContentViewController: UIViewController, GalleryContentVi
     }
     
     public var presentationAnimation: GalleryContentPresentationAnimation {
-        .fromSourceViewWithoutSnapshot
+        isShowingError ? .fade : .fromSourceViewWithoutSnapshot
     }
     
     private lazy var overlayVC = VideoOverlayViewController(player: player)
@@ -169,7 +173,9 @@ open class VideoGalleryContentViewController: UIViewController, GalleryContentVi
     public private(set) lazy var bottomControlsAccessoryViewController: UIViewController? = VideoControlsViewController(player: player)
     
     public func setControlsVisible(_ visible: Bool, animated: Bool, dueToUserInteraction: Bool) {
-        overlayVC.setVisible(visible)
+        if !isShowingError {
+            overlayVC.setVisible(visible)
+        }
         
         if !visible {
             hideControlsWorkItem?.cancel()