fix: show AppBar when Tabs is a child of AppBar#656

maartenbreddels merged 2 commits intomasterwidgetti/solara:masterfrom

05-21-fix_show_appbar_when_tabs_are_the_only_childrenwidgetti/solara:05-21-fix_show_appbar_when_tabs_are_the_only_childrenCopy head branch name to clipboard