Unable to select Erianthus from taxon change page

[jwidness]

reported previously, but not specifically as a bug report:

@bouteloua

Search all taxa when adding an output taxon. Currently can only “Browse all species” for input taxa. Way to get around this is to assign a temporary fake common name to the output taxon, e.g. “zzzzz”, so that you can actually find it in search.