### 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 {
			
			if (caret_mid_grapheme_enabled) {
				next_column = get_caret_column(caret_idx) < curline_len ? (get_caret_column(caret_idx) + 1) : 0;
			} else {
				next_column = get_caret_column(caret_idx) < curline_len ? TS->shaped_text_next_grapheme_pos(text.get_line_data(get_caret_line(caret_idx))->get_rid(), (get_caret_column(caret_idx))) : 0;
			}
			
			if (i > 0) {
				int prev_caret_idx = caret_edit_order[i - 1];
				if (get_caret_line(prev_caret_idx) == next_line && get_caret_column(prev_caret_idx) == next_column) {
					carets_to_remove.push_back(prev_caret_idx);
				}
			}
		}
		_remove_text(get_caret_line(caret_idx), get_caret_column(caret_idx), next_line, next_column);
		adjust_carets_after_edit(caret_idx, get_caret_line(caret_idx), get_caret_column(caret_idx), next_line, next_column);
	}
	
	carets_to_remove.sort();
	for (int i = carets_to_remove.size() - 1; i >= 0; i--) {
		remove_caret(carets_to_remove[i]);
	}
	
	merge_overlapping_carets();
	end_action();
	queue_redraw();
}
void TextEdit::_move_caret_document_start(bool p_select) {