### 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.
ERR_FAIL_INDEX(p_caret, carets.size());
	
	scrolling = false;
	minimap_clicked = false;
	set_line_as_center_visible(get_caret_line(p_caret), get_caret_wrap_index(p_caret));
	int visible_width = get_size().width - style_normal->get_minimum_size().width - gutters_width - gutter_padding;
	if (draw_minimap) {
		visible_width -= minimap_width;
	}
	if (v_scroll->is_visible_in_tree()) {
		visible_width -= v_scroll->get_combined_minimum_size().width;
	}
	visible_width -= 20; 
	if (get_line_wrapping_mode() != LineWrappingMode::LINE_WRAPPING_NONE) {
		
		Vector2i caret_pos;
		
		if (ime_text.length() != 0 && ime_selection.x != 0) {
			caret_pos.x = _get_column_x_offset_for_line(get_caret_column(p_caret) + ime_selection.x, get_caret_line(p_caret), get_caret_column(p_caret));
		} else {
			caret_pos.x = _get_column_x_offset_for_line(get_caret_column(p_caret), get_caret_line(p_caret), get_caret_column(p_caret));
		}