gatt: Fix direct connect

This fix regression after
cae44b5d Add support to connect LE Gatt with address type (2/2)

Gatt shall always check the security record of the device and make sure
that when adding device to allow list, we use identity address if it is
known.

Bug: 278199753
Test: manual
Tag: #feature
Change-Id: I3f6cb30b6b90dd379a5ce6fd7c793e003324d24e