SM: Implement name request during Classic pairing

Ensure we try to receive the name and wait for it before
we show the UserConfirmation Dialog.

Bug: 162984360
Tag: #gd-refactor
Test: cert/run --host SecurityTest
Test: atest --host bluetooth_test_gd
Change-Id: I6a4401873770f7f642e06da34002dba55e5f049e