Fix to how AttrTree handles name mangled attributes
Fix to how AttrTree handles name mangled attributes

ioam/holoviews,basnijholt/holoviews,vascotenner/holoviews,basnijholt/holoviews,vascotenner/holoviews,ioam/holoviews,vascotenner/holoviews,ioam/holoviews,basnijholt/holoviews