[fenix] For https://github.com/mozilla-mobile/fenix/issues/1973 - Toggle QR button on deny permissions, fix engineView crashes

app/src/main/java/org/mozilla/fenix/browser/BrowserFragment.kt

@@ -167,7 +167,7 @@ class BrowserFragment : Fragment(), BackHandler, CoroutineScope {
             }
         }
 
-        view.engineView.asView().apply {
+        view.swipeRefresh.apply {
             val toolbarSize =
                 (resources.displayMetrics.density * TOOLBAR_HEIGHT).toInt() +
                         (if (customTabSessionId == null) QUICK_ACTION_SHEET_HANDLE_HEIGHT else 0)
@@ -692,7 +692,7 @@ class BrowserFragment : Fragment(), BackHandler, CoroutineScope {
             ToolbarMenu.Item.SaveToCollection -> showSaveToCollection()
             ToolbarMenu.Item.OpenInFenix -> {
                 // To not get a "Display Already Acquired" error we need to force remove the engineView here
-                browserLayout?.removeView(engineView as View)
+                swipeRefresh?.removeView(engineView as View)
                 val intent = Intent(context, IntentReceiverActivity::class.java)
                 intent.action = Intent.ACTION_VIEW
                 getSessionById()?.customTabConfig = null

app/src/main/java/org/mozilla/fenix/search/SearchFragment.kt

@@ -311,6 +311,8 @@ class SearchFragment : Fragment(), BackHandler {
                 context?.let { context: Context ->
                     if (context.isPermissionGranted(Manifest.permission.CAMERA)) {
                         permissionDidUpdate = true
+                    } else {
+                        view?.search_scan_button?.isChecked = false
                     }
                 }
             }