Update CoD LE audio bit based on the feature system properties

From BAP, the device should set the LE audio bit 14 in CoD. It's hard to
update the CoD per project setting. BT stack would check the feature
enable system properties to update the CoD LE audio bit automatically.

Bug: 263747231
Test: m com.android.btservices

Change-Id: Ieb8c50babb87d7704e2c1e8e91a511063d6d9a66