### 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.
return carets.size();
}
void TextEdit::add_caret_at_carets(bool p_below) {
	Vector<int> caret_edit_order = get_caret_index_edit_order();
	for (const int &caret_index : caret_edit_order) {
		const int caret_line = get_caret_line(caret_index);
		const int caret_column = get_caret_column(caret_index);
		
		
		
		int caret_from_column = 0, caret_to_column = 0, caret_last_fit_x = carets[caret_index].last_fit_x;
		if (has_selection(caret_index)) {
			
			if (get_selection_from_line(caret_index) != get_selection_to_line(caret_index)) {
				deselect(caret_index);
			} else {
				caret_from_column = get_selection_from_column(caret_index);
				caret_to_column = get_selection_to_column(caret_index);
				caret_last_fit_x = -1;
				carets.write[caret_index].last_fit_x = _get_column_x_offset_for_line(caret_column, caret_line, caret_column);
			}
		}
		
		int new_caret_line, new_caret_column, new_caret_from_column = 0, new_caret_to_column = 0;
		_get_above_below_caret_line_column(caret_line, get_caret_wrap_index(caret_index), caret_column, p_below, new_caret_line, new_caret_column, caret_last_fit_x);
		
		if (caret_from_column != caret_to_column) {