fix: infowindows not close when start filtering
fix: infowindows not close when start filtering

You have a bug in your filtering function. If I enter something into the
input, then erase it back, not every markers become visible again

Tip: You should also close an infowindow if its associated marker is
filtered out to prevent this (mind the orphan window)

weiliy/fend-neighborhood-map,weiliy/fend-neighborhood-map