Using carrier config value if there is no value of the call forward no reply time from MMI code

Bug: 342346827
Test: atest ImsPhoneMmiCodeTest
Flag: com.android.internal.telephony.flags.use_carrier_config_for_cfnry_time_via_mmi
Change-Id: I58da7f8c35f9f816724ec3d84dbfe9d0ce8792e0
4 files changed