Change HashMap to ConcurrentHashMap.

Following variables are changed to ConcurrentHashMap:
- mSatelliteServicesSupportedByCarriersFromConfig
- mCarrierRoamingSatelliteSessionStatsMap
- mSatModeCapabilitiesForCarrierRoaming
- mProvisionedSubscriberId
- mSubscriberIdPerSub

Bug: 409584433
Test: 417808605
Test: atest
Flag: com.android.internal.telephony.flags.satellite_improve_multi_thread_design
Change-Id: I45f26f3743c0d63cb6d47ed11d7eb0985e45f36a