### 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.
} else {
				scrolling = false;
				minimap_clicked = false;
				set_physics_process_internal(false);
			}
		} break;
		case NOTIFICATION_DRAW: {
			if (first_draw) {
				
				adjust_viewport_to_caret();
				first_draw = false;
			}
			
			if (Engine::get_singleton()->is_editor_hint()) {
				if (syntax_highlighter.is_valid() && syntax_highlighter->get_text_edit() != this) {
					syntax_highlighter->set_text_edit(this);
				}
			}
			Size2 size = get_size();
			bool rtl = is_layout_rtl();
			if ((!has_focus() && !(menu && menu->has_focus())) || !window_has_focus) {
				draw_caret = false;
			}
			_update_scrollbars();
			RID ci = get_canvas_item();
			RenderingServer::get_singleton()->canvas_item_set_clip(get_canvas_item(), true);
			int xmargin_beg = style_normal->get_margin(SIDE_LEFT) + gutters_width + gutter_padding;
			int xmargin_end = size.width - style_normal->get_margin(SIDE_RIGHT);
			if (draw_minimap) {
				xmargin_end -= minimap_width;