[Kairos] Use repo for all fields in MobileConnectionRepoKairosAdapter

In If250be73b3b86ac31237d4e11327c6233bc0221f, we're going to change the
CarrierMergedConnectionRepositoryKairos to use the carrier config for
`inflateSignalStrength`, but only if a certain flag is enabled. We want
the adapter to mimic that same behavior instead of always using the
carrier config.

This CL updates the adapter to just pull from the repo for every single
field and not use the carrier config at all.

Bug: 423686800
Flag: TEST_ONLY
Test: atest CarrierMergedConnectionRepositoryKairosAdapterTest
MobileConnectionKairosAdapterTelephonySmokeTests
MobileConnectionRepositoryKairosAdapterTest

Change-Id: I03ee53346f97f15e1a046e4b764fe85c42606fdf