Reduce rare source of flakiness in profiling test.
Reduce rare source of flakiness in profiling test.

If a background thread allocates an object which is then profiled, we may see
it.  Filter out sizes that we didn't anticipate allocating.

PiperOrigin-RevId: 347398637
Change-Id: I70e0d6896b940726be5a5c0546f5fb9b8d695634

google/tcmalloc,google/tcmalloc,google/tcmalloc