### 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
ERR_FAIL_COND(p_caret > carets.size());
	if (!is_editable() || !DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_CLIPBOARD_PRIMARY)) {
		return;
	}
	String paste_buffer = DisplayServer::get_singleton()->clipboard_get_primary();
	if (carets.size() == 1) {
		Point2i pos = get_line_column_at_pos(get_local_mouse_pos());
		deselect();
		set_caret_line(pos.y, true, false);
		set_caret_column(pos.x);
	}
	if (!paste_buffer.is_empty()) {
		insert_text_at_caret(paste_buffer);
	}
	grab_focus();
}
Key TextEdit::_get_menu_action_accelerator(const String &p_action) {