rgw: rgw_token.cc error: reference to 'formatter' is ambiguous

rgw: rgw_token.cc error: reference to 'formatter' is ambiguous

compiling main branch on Fedora 38 and 39/rawhide with gcc-c++-13.0.1
fails with the error:

/builddir/build/BUILD/ceph-18.0.0-2148-g9754cafc/src/rgw/rgw_token.cc:
In function 'int main(int, char**)':
/builddir/build/BUILD/ceph-18.0.0-2148-g9754cafc/src/rgw/rgw_token.cc:125:3:
error: reference to 'formatter' is ambiguous
  125 | formatter = new JSONFormatter(true /* pretty */);
      |   ^~~~~~~~~

Similar error for src/test/test_rgw_token.cc

Signed-off-by: Kaleb S. KEITHLEY <kkeithle@redhat.com>