Gin LB does not apply for dialog form

Problem/Motivation

Gin LB does not apply its hooks to my form in media_library_edit because media type id is not supported. As a result I can't save a media in a dialog.

Steps to reproduce

1. Install gin_lb and media_library_edit
2. Go to LB, add a media with unusual type name (not image)
3. Click inline edit button on media

Actual result:
Save buttons are not available

Expected result:
I can save a media form

Proposed resolution

Fix Gin LB hook condition.

Remaining tasks