Fix GATT Server disconnecting for no reason
Connections created by GAP profile should be ephemeral, and not
interfere with the connection timeout.
When a device is bonded, listing services through DM would cause a
DM APP to create a connection, and later to disconnect. This causes
connection to timeout. In case a device was already connected, this
should not happen.
Bug:
34951749
Test: manual
Change-Id: Iad04fd9eed4c664f35131442e3f83a704497a067
(cherry picked from commit
16bb48b320cde54a1a06a525f4d9be1421689649)