[nrf fromtree] bluetooth: audio: Update encrypt state value

Fixes a bug where encrypt state value was not updated based on given
parameters.

Signed-off-by: Omkar Kulkarni <[email protected]>
(cherry picked from commit b6e5d03)

Author: omkar3141

subsys/bluetooth/audio/bap_scan_delegator.c

@@ -1615,6 +1615,7 @@ int bt_bap_scan_delegator_add_src(const struct bt_bap_scan_delegator_add_src_par
 	state->adv_sid = param->sid;
 	state->broadcast_id = param->broadcast_id;
 	state->pa_sync_state = param->pa_state;
+	state->encrypt_state = param->encrypt_state;
 	state->num_subgroups = param->num_subgroups;
 	if (state->num_subgroups > 0U) {
 		(void)memcpy(state->subgroups, param->subgroups,