Notify IMS Service when SET UP EVENT LIST proactive command is received.

IMS services need to know whether the IMS REGISTRATION event is included in SET UP EVENT LIST to decide if it needs to inform IMS registration status to UICC. For this, CAT Service is modified to decode the IMS REGISTRATION event in SET UP EVENT LIST and to notify the IMS Service the SET UP EVENT LIST.

Bug: 412452528
Bug: 408143665
Test: manual test and atest CATServiceTest
Flag: com.android.internal.telephony.flags.support_ims_registration_event_download
Change-Id: I919428631be6a58cf9a86dba76692840802c8e0f