### 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.
int first_vis_line = get_first_visible_line();
	return get_next_visible_line_index_offset_from(first_vis_line, first_visible_line_wrap_ofs, get_visible_line_count()).y;
}
int TextEdit::get_visible_line_count() const {
	return _get_control_height() / get_line_height();
}
int TextEdit::get_visible_line_count_in_range(int p_from_line, int p_to_line) const {
	ERR_FAIL_INDEX_V(p_from_line, text.size(), 0);
	ERR_FAIL_INDEX_V(p_to_line, text.size(), 0);
	
	if (p_from_line > p_to_line) {
		SWAP(p_from_line, p_to_line);
	}
	
	if (!_is_hiding_enabled() && get_line_wrapping_mode() == LineWrappingMode::LINE_WRAPPING_NONE) {
		return (p_to_line - p_from_line) + 1;
	}
	int total_rows = 0;
	for (int i = p_from_line; i <= p_to_line; i++) {
		if (!text.is_hidden(i)) {
			total_rows++;
			total_rows += get_line_wrap_count(i);
		}
	}
	return total_rows;
}
int TextEdit::get_total_visible_line_count() const {