R1:f8113aecdcbe

Make bulk edit <select /> fields a little more natrual and set options for subtype transactions

Summary:
Ref T13025. This is some minor technical stuff: make the "select" bulk edit type a little more consistent with other types by passing data down instead of having it reach up the stack. This simplifies the implementation of a custom field "select" in a future change.

Also, provide an option list to the "select" edit field for object subtypes. This is only accessible via Conduit so it currently never…