### 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 dragging_selection || dragging_minimap;
}
bool TextEdit::is_mouse_over_selection(bool p_edges, int p_caret) const {
	for (int i = 0; i < carets.size(); i++) {
		if (p_caret != -1 && p_caret != i) {
			continue;
		}
		if (!has_selection(i)) {
			continue;
		}
		Point2i pos = get_line_column_at_pos(get_local_mouse_pos());
		int row = pos.y;
		int col = pos.x;
		if (p_edges) {
			if ((row == get_selection_from_line(i) && col == get_selection_from_column(i)) || (row == get_selection_to_line(i) && col == get_selection_to_column(i))) {
				return true;
			}
		}
		if (row >= get_selection_from_line(i) && row <= get_selection_to_line(i) && (row > get_selection_from_line(i) || col > get_selection_from_column(i)) && (row < get_selection_to_line(i) || col < get_selection_to_column(i))) {
			return true;
		}
	}
	return false;
}
void TextEdit::set_caret_type(CaretType p_type) {