Hide PiP button if is not unavailable

This should fix #1879

Sources/Playback/Player/VideoPlayer-iOS/Subviews/MediaNavigationBar.swift

@@ -222,12 +222,22 @@ private enum RendererActionSheetContent: Int, CaseIterable {
         addArrangedSubview(queueButton)
 #if os(iOS)
         addArrangedSubview(deviceButton)
-        addArrangedSubview(pictureInPictureButton)
+        addPipButtonIfSupported()
 #else
         addArrangedSubview(airplayVolumeView)
 #endif
     }
 
+    // MARK: - Pip Availability
+
+    private func addPipButtonIfSupported() {
+#if !targetEnvironment(simulator)
+        if #available(iOS 14.0, *) {
+            addArrangedSubview(pictureInPictureButton)
+        }
+#endif
+    }
+
     // MARK: Gesture recognizer
 
     @objc private func handleLongPressPlayPause(_ sender: UILongPressGestureRecognizer) {