### Godot version

4.0 beta 15

### System information

Windows 10

### Issue description

It happened with both Google IME and MS-IME, and there was no problem until Beta14.
When typing Japanese characters, it is common to select a character from the suggestion window and then start typing the next character before confirming.
In this case, uncommitted characters are forcibly committed, and input of the next character begins.

**↓Beta15**

https://user-images.githubusercontent.com/186786/214753450-b493cca6-2644-4b3d-8cd2-660565cc3547.mp4

**↓Beta14**

https://user-images.githubusercontent.com/186786/214755127-dde819cc-4d63-403a-99b0-09821671f74e.mp4



### Steps to reproduce

It happened with both Google IME and MS-IME in beta15

### Minimal reproduction project

It is project independent and happens in the editor.
double val = get_v_scroll() - floor(get_v_scroll());
	return CLAMP(val, 0, 1);
}
void TextEdit::_scroll_up(real_t p_delta) {
	if (scrolling && smooth_scroll_enabled && SIGN(target_v_scroll - v_scroll->get_value()) != SIGN(-p_delta)) {
		scrolling = false;
		minimap_clicked = false;
	}
	if (scrolling) {
		target_v_scroll = (target_v_scroll - p_delta);
	} else {
		target_v_scroll = (get_v_scroll() - p_delta);
	}
	if (smooth_scroll_enabled) {
		if (target_v_scroll <= 0) {
			target_v_scroll = 0;
		}
		if (Math::abs(target_v_scroll - v_scroll->get_value()) < 1.0) {
			v_scroll->set_value(target_v_scroll);
		} else {
			scrolling = true;
			set_physics_process_internal(true);
		}
	} else {
		set_v_scroll(target_v_scroll);
	}
}
void TextEdit::_scroll_down(real_t p_delta) {