Parse the headers before profile id extraction

Problem: When both profiles are enabled, profile id is exctracted
from the buffer w/o parsing the headers.

Solution: Short-term fix to parse the header first and then extract
the profile id from the buffer.
Long-term fix would involve removing the duplicate method (cautiously)

Bug: 325660319
Bug: 321806163
Test: atest net_bt_*
Change-Id: I6af6c8d003d2b33309215d00f2b840b6d0caae9e