Move 'isProbing' field from RecordInfo to ServiceRegistration

Move the 'isProbing' field from RecordInfo to ServiceRegistration class.
The 'isProbing' state is tightly coupled to each registration, rather
than each record. This refactor simplifies the RecordInfo class, which
is necessary for future updates to support updating RecordInfo in place.

Bug: 300560526
Test: TH
Change-Id: Ic7a5514fe5ce3262896ef34a6b629780da022f30
1 file changed