DO NOT MERGE ANYWHERE Do not update sco_state when no matching peer_addr is found

In the bta_hf_client_sco_conn_cback function, sco_state should not be set to
BTA_HF_CLIENT_SCO_SHUTDOWN_ST when no matched peer_addr found, so that it
can handle BTA_HF_CLIENT_SCO_OPEN_E event later.

Bug: 26416310
Change-Id: I4540230c792490f79e4cca24cb4b34a1c383422f
(cherry-picked from 6833e170)