A2DP: Don't select disabled optional codecs when local SRC reconnecting

A2DP: Don't select disabled optional codecs when local SRC reconnecting

When local SRC is establishing a connection, the Bluetooth stack follows
those default priorities to choose a codec, and A2dpService needs to
judge again after this connection up event. If a user prefers the
mandatory codec, the peer state is OPEN -> RECONFIG -> OPEN which
is redundant but lousy. Since codecs preference is saved at the
upper-layer, this change queries the mandatory codec, and raises
the priority for more preferred codec while reconnecting from local.

Bug: 134131114
Bug: 147572898
Test: Local A2DP initializes connections
Change-Id: I110ffa463dd4c9ec62e18e1843b5aebc84d73093
Merged-In: I110ffa463dd4c9ec62e18e1843b5aebc84d73093
(cherry picked from commit 2fda2f0e415b2da9e7d5201bf8089492db88e73a)