LE Audio Allowlist refactor for default connection

The patch changes the LE Audio Allowlist usage to allow the default
connection perference. If the device is in the allow list, it would use
LE audio as default conneciton after paring; Otherwise, the classic
profile would be connected. Bypass LE Audio Allowlist is to allow use LE
audio connection by default for all the devices.

The allow list could be bypass by
1. developer option toggle - "Bypass LE Audio Allowlist"
2. adb shell setprop persist.bluetooth.leaudio.bypass_allow_lis true

Bug: 300012501
Test: atest BluetoothInstrumentationTests
Change-Id: I4566537629bb2b1815ae3924a691087ea39d161b