[Pandora] Pair on transport corresponding to Connection

Rather than always trying BR/EDR first (TRANSPORT_AUTO), we will respect
the Transport upon which the Connection was established.

Bug: 245578454
Test: Test: GAP pts-bot
Ignore-AOSP-First: Cherry-pick from AOSP
Merged-In: If0643b68be6f5b10b142d7a773dc7c8b60f362d2
Change-Id: If0643b68be6f5b10b142d7a773dc7c8b60f362d2