Update EmergencyNumber for redial via emergency routing

When redialing is required via emergency routing, the emergency number information is updated.
The eccCategory and emergencyUrns information provided through DialArgs are updated, and the routing information is updated to emergency routing.

Bug: 336759603
Test: atest FrameworksTelephonyTests
Test: build and manual test

Change-Id: Ib404d1e41633df7f834792ba1156296dd4ad91f6