### 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.
_scroll_down(15 * mb->get_factor());
				} else if (v_scroll->is_visible()) {
					
					_scroll_down(3 * mb->get_factor());
				}
			}
			if (mb->get_button_index() == MouseButton::WHEEL_LEFT) {
				h_scroll->set_value(h_scroll->get_value() - (100 * mb->get_factor()));
			}
			if (mb->get_button_index() == MouseButton::WHEEL_RIGHT) {
				h_scroll->set_value(h_scroll->get_value() + (100 * mb->get_factor()));
			}
			if (mb->get_button_index() == MouseButton::LEFT) {
				_reset_caret_blink_timer();
				Point2i pos = get_line_column_at_pos(mpos);
				int row = pos.y;
				int col = pos.x;
				int left_margin = style_normal->get_margin(SIDE_LEFT);
				for (int i = 0; i < gutters.size(); i++) {
					if (!gutters[i].draw || gutters[i].width <= 0) {
						continue;
					}
					if (mpos.x >= left_margin && mpos.x <= left_margin + gutters[i].width) {
						emit_signal(SNAME("gutter_clicked"), row, i);
						return;
					}
					left_margin += gutters[i].width;
				}
				
				if (draw_minimap) {