detect: fix file_data detect issue with alert ip

detect: fix file_data detect issue with alert ip

Fix mpm progress being updated by irrelevant engines. Esp in the
case of file_data engines, signature can contain multiple versions
of the same engine, registered for different 'progress' values.

This would lead to signatures being considered 'can't match' even
in cases where they clearly could still match.

Only consider those progress values that apply to the protocol in
use.