Clear SDP attempts during bond cancel

When DUT is in bonding state performing service search and the
peer device re-triggers the bond procedure, pin code request is
displayed again.
Moreover, if user cancels the pin code dialog, the previous
service search cannot be cancelled. This will affect the bond
state sync between stack and framework causing issues with all
the subsequent create_bond procedures.

This change clears SDP attempts when bond is cancelled thereby terminating the service search attempts and keeping the bond
state consistent between stack and framework.

Change-Id: Id7f1353462ffdb616b9da0e8e51c068d85be519e
Test: atest PairingTest
Flag: EXEMPT bugfix
Bug: 328846526