Fix IMEI issue after setRadioCapability

Query IMEI for both slots after SetRadioCapability completed.

This will ensure we have the right IMEI's to display to the
user corresponds to each SIM card after logical Modemid
maping changed w.r.t each Phone object.

Bug: 175092322
Test: Verified setRadioCapability() and DDS switch manually
Change-Id: I580d2330d24d12a908cc21b85173d0945184b1f5