floss: Drop Connect Complete with bad handle

Some controllers are returning a Connect Complete with an invalid handle
when SCO connections fail rather than returning a SCO Connect Complete.
Temporarily drop such packets unilaterally until we have finer grade
control of such asserts by policy.

Bug: 261610529
Tag: #floss
Test: Build and basic test against ChromeOS

Change-Id: I3904ec05c4b105d4340a4b17cac2133d074e475e