Decrease capacity of the ring based transfer cache.
Decrease capacity of the ring based transfer cache.

The ring based transfer cache is loaded more than the legacy one by default,
because it accepts non-batch-sized inserts, which are common when shrinking cpu
caches one element at a time. Decrease the overall capacity to compensate for
that.

PiperOrigin-RevId: 399870246
Change-Id: I43c7913a34a7232cdb810a2b6551820b4e3a33d6

google/tcmalloc,google/tcmalloc,google/tcmalloc