NGAP: Add UESecurityCapabilities IE to PathSwitchRequestAcknowledge
This IE is now used by Open5GS, so add it to the receive template.
This fixes C5G_Tests.TC_handover_inter_ngran_xn.
Note that there is also a pull request to fix the location of this IE in Open5GS. (https://github.com/open5gs/open5gs/pull/4589) Without this fix the test case will fail.
C5G: Release UE Context before sending Service request
A recent fix in Open5GS rejects RAN_UE_NGAP_ID in InitialUEMessage. This causes all tests to fail that send a subsequent InitialUEMessage with the same RAN_UE_NGAP_ID.
Release the UE Context before re-using the RAN_UE_NGAP_ID, because the connection handler can only handle one context at a time.
Note that the AMF_UE_NGAP_ID is incremented by Open5GS for every context.
This fixes: TC_ue_service_request_cm_idle_inact_sess TC_ue_service_request_cm_idle_ul_data TC_ue_service_request_cm_idle_unknown_sess_active
