### Godot version

v4.0.beta.custom_build [13f0158]

### System information

Windows 10

### Issue description

When doing operations (`begin_complex_operation` and `end_complex_operation`) with multiple selections in TextEdit, some of these selections don't revert upon undo. This behavior is affects some of script editor's operations, like duplicate selection and delete lines.

### Steps to reproduce

Open script editor, make multiple selections. Keep in mind what you have selected. Do duplicate selection (ctrl+shift+D). Undo (ctrl+Z). Compare the result to what you remember.

### Minimal reproduction project

N/A
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) {
	if (caret_type == p_type) {
		return;
	}
	caret_type = p_type;
	queue_redraw();
}
TextEdit::CaretType TextEdit::get_caret_type() const {