Show parent field name for frameless modular content in editor

When editing a frameless modular content block, currently that field only shows the field name from the nested block. In the example below, that field is Body, while the modular content field is actually named Intro.

There is currently no indication anywhere for our editors as to the name of the field. Instead, it relies on context clues and fieldset names to know what they are actually editing. If, for instance, I had two of the same type of frameless single modular content fields in a row, the editor would have no idea as to which is which.

I propose that we show the modular content field name in addition to the field name: