Adding a file component breaks the drop-down menu, error in console

[jenlampton]

I haven't figured out why yet, but when I add a file component to my webform, my drop-down menu looks like:

Instead of like:

In the console I see the error TypeError: $(...).backdropSetSummary is not a function

[jenlampton]

Okay, so it loos like the function backdropSetSummary() is part of file module, and just needs to be included for the webform component when the manage file element is in use. I'm not sure why it wasn't there in the first place, but the provided PR fixes it.

[herbdool]

Nice catch! I can deal with this soon.