Auto merge of #12429 - cjkenn:12412, r=Ms2ger

Remove assert statement from window.

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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes fix #12412 (github issue number if applicable).

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- [ ] There are tests for these changes OR
- [X] These changes do not require tests because simple removal of assert, no logic added or changed.

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ports/glutin/window.rs

@@ -242,7 +242,6 @@ impl Window {
     fn handle_window_event(&self, event: glutin::Event) -> bool {
         match event {
             Event::ReceivedCharacter(ch) => {
-                assert!(self.pending_key_event_char.get().is_none());
                 if !ch.is_control() {
                     self.pending_key_event_char.set(Some(ch));
                 }