More logging around API get_connected_state

API call does not switch threads and is unsynchronized
with main but only does read operations.  Further the
API is not one-way and returns synchronously and does not
conform to typical API behavior.

Bug: 293533821
Test: atest net_test_btif_stack
Change-Id: I9a44f043a6bea1f90ed1bdc17186e0126bb5b6c4