frames: do not only rely on FRAME_STREAM_ID

frames: do not only rely on FRAME_STREAM_ID

As stream frame is not always created,
hence the first frame is not always a stream frame :
If stream frame is not enabled, it does not get created,
and other enabled frames may be created first.
See use of FrameConfigTypeIsEnabled

This resulted that this other frame got its length updated
on stream end, which led to false positives.

Also checking FRAME_STREAM_TYPE is more consistent.

Not a clean cherry-pick as AppLayerFrameGetLastOpenByType
does not exist in main7

Ticket: 7213