Bug 1864549 - Fix for IllegalStateException in full screen notification dialog

android-components/components/feature/prompts/src/main/java/mozilla/components/feature/prompts/dialog/FullScreenNotificationDialog.kt

@@ -59,11 +59,12 @@ class FullScreenNotificationDialog(@LayoutRes val layout: Int) :
                 window.setGravity(Gravity.BOTTOM)
                 window.clearFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND)
             }
+        }
 
+        // Attempt to automatically dismiss the dialog after the given duration.
         lifecycleScope.launch {
             delay(SNACKBAR_DURATION_LONG_MS)
-                dismiss()
-            }
+            dialog?.dismiss()
         }
     }
 }