LE Audio: improve LE Audio device detection for Bonding

As per BAP 1.0.1 and CAP 1.0 specs, LE Audio capable device shall/should
put Service data for some services into the Advertisement.
If these are detected, such devices should be treated as LE Audio
capable for bonding.

This is addition to existing mechanisms that was using just CoD field.

Bug: 246560805
Test: pair with dual mode capable devices
Change-Id: Icd6287fecbeadbc853e1ae4146937c85adea9104