Fix issue of selecting frames - User can not switching frames any more after user switching component. - It is caused by frameline_stack.remove_all_framelines() which reset active frame callback. - It is fixed by stoping it.

<project>
	<scene src="/tmp/scene.mbsvg"/>
	<scene src="/tmp/second.mbsvg"/>
	<source src="/tmp/main.c"/>
	<source src="/tmp/second.c"/>
</project>