acqinfo field is not searchable

[seanaery]

This seems like a bug/oversight. Text captured in the <acqinfo> field (see docs) is not currently getting indexed in a way where a keyword search will find it. That field might include, e.g., the name of a donor in which case it would be valuable for staff/users to be able to search for that name.

From the schema.xml file it looks like <acqinfo> was intended to be captured as a searchable note.

<copyField source="acqinfo_tesim" dest="text" />

But the current traject rules do not have acqinfo getting captured as _tesim (only _ssim). One possible fix would be to add acqinfo to the SEARCHABLE_NOTES_FIELDS array in the collection & component traject configs.