### 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.
continue;
		}
		if (has_selection(c)) {
			
			
			
			deselect(c);
			continue;
		}
		int begin = 0;
		int end = 0;
		const PackedInt32Array words = TS->shaped_text_get_word_breaks(text.get_line_data(get_caret_line(c))->get_rid());
		for (int i = 0; i < words.size(); i = i + 2) {
			if ((words[i] <= get_caret_column(c) && words[i + 1] >= get_caret_column(c)) || (i == words.size() - 2 && get_caret_column(c) == words[i + 1])) {
				begin = words[i];
				end = words[i + 1];
				break;
			}
		}
		
		if (begin == 0 && end == 0) {
			continue;
		}
		select(get_caret_line(c), begin, get_caret_line(c), end, c);
		
		set_caret_column(end, false, c);
	}
	merge_overlapping_carets();
}
void TextEdit::add_selection_for_next_occurrence() {