Make the Fuzz tests use the lighter weight FakeCentralFreelist so they don't go through all the overhead of mocks.
Make the Fuzz tests use the lighter weight FakeCentralFreelist so they don't go
through all the overhead of mocks.

PiperOrigin-RevId: 335496971
Change-Id: I90cd3f1575da9404cce8b66192a299193498a612

google/tcmalloc,google/tcmalloc,google/tcmalloc