Syncronize frameowrk and ImsStack operation for ImsFeatureStatusCallback.

Avoid race condition when ImsStack updates the feature status and
framework adds callback for ImsFeatureStatus

Test: atest CtsTelephonyTestCases:ImsCallingTest
Bug: 248215521

Merged-In: I42dfb45e15dda0f2bf6a11263edf3a7920a4140b
Change-Id: I42dfb45e15dda0f2bf6a11263edf3a7920a4140b