Enable span_test* to link/run with sanitizers.
Enable span_test* to link/run with sanitizers.

Sanitizers replace the malloc = "..." attribute, so we do not link the symbols
in :common*.  Directly depend on this library instead, which also removes the
need for :headers_for_tests.
PiperOrigin-RevId: 297353085
Change-Id: I21c183d1af4a0668300b37c69912203840a2971a

google/tcmalloc,google/tcmalloc,google/tcmalloc