Enable multiple connection requests for same UUID if different addresses

Allow the BTIF Profile Queue to contain entries with same UUID, but
different addresses.
Also:
 - Refactor the internal implementation of the Profile Queue to use
   C++ std::list instead of the local osi/include/list.h implementation.
 - Replaced struct connect_node_t with class ConnectNode, and moved the
   connect callback logic to ConnectNode::connect().
 - Simplified the implementation by replacing the existing callback
   mechanism based on btif_transfer_context() with do_in_jni_thread().
 - Updated the unit tests to test the new behavior.

Test: Manual and unit tests.
Bug: 69634326
Change-Id: I3c4021361902c19f004e2d8b56ad20e66a5a690a