Remove core:lib dependency in favor of Lite-specific logging helper

This CL makes an enormous swathe of TF Lite's tests buildable on Android
targets (and helps for many iOS tests, as well).

The only reason the tests dependended on tensorflow/core:lib was because lib was
the most common target that includes logging.h, which is necessary for
log-related tests.

This set of utilities may not be perfect (e.g. it still means that certain
TF-related test resources, like FLAGs, are not accessible), but it is an
improvement.

PiperOrigin-RevId: 187940806