Make TFE_Py_FastpathExecute work for all types of ops

MatMul benchmarks:
entry {
  name: "MicroBenchmarks.benchmark_gen_math_ops_matmul_2_by_2_CPU"
  iters: 30000
  wall_time: 11.580435435
  extras {
    key: "examples_per_sec"
    value {
      double_value: 86352.538781
    }
  }
}

entry {
  name: "MicroBenchmarks.benchmark_tfe_py_fastpath_execute_matmul_2_by_2_CPU"
  iters: 30000
  wall_time: 7.02576637268
  extras {
    key: "examples_per_sec"
    value {
      double_value: 142333.227004
    }
  }
}

PiperOrigin-RevId: 184734289