With the Select tool, a press on a form field went to the field before
comments, so a signature (or any movable comment) sitting on top of a
field could not be dragged: the cursor showed Move, but the field took
the press on the frame the drag started. A slow, hand-speed drag always
started while the pointer was still over the field, so it never moved.
The Select tool now checks for a movable comment under the press first
(select_grabs, sharing fill_grabs' hit logic) and only lets the form
field take it when there is none. Away from comments, fields fill as
before.
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>