message: [XLA] Increase the tolerable error for ErfInv(F16) tests.
  This is to prepare for PR
diff: @@ -530,7 +530,15 @@ UNARY_TEST_BF16(Tan, {
  UNARY_TEST_FLOAT_32_BITS_OR_LESS(Erf, { Run(Erf, std::erf); })
  UNARY_TEST_FLOAT_32_BITS_OR_LESS(Erfc, { Run(Erfc, std::erfc); })
  -UNARY_TEST_FLOAT_32_BITS_OR_LESS(ErfInv, { Run(ErfInv, HostErfInv); })
  +
  +UNARY_TEST_F32(ErfInv, { Run(ErfInv, HostErfInv); })
  +
  +UNARY_TEST_F16(ErfInv, {
  + Run(ErfInv, HostErfInv, [](Eigen::half) { return ErrorSpec{0.002, 0.002}; });
  +})
  +
  +UNARY_TEST_BF16(ErfInv, { Run(ErfInv, HostErfInv); })
  +
  UNARY_TEST_FLOAT_32_BITS_OR_LESS(Digamma, {
  ErrorSpecGen error_spec_gen = GetDefaultSpecGenerator();
  if (platform_ != "Host" && platform_ != "CUDA") {
  