Use the ID.recalc flag to detect when updates after frame-change is
needed. Since comparing the last calculated frame doesn't take undo into
account (see code-comment for details).
`ID_RECALC_AUDIO_SEEK` has been renamed to `ID_RECALC_FRAME_CHANGE`
since this is not only related to audio however internally this flag is
still categorized in `NodeType::AUDIO`.
Reviewed By: sergey
Ref D13942
35aedd87e7