support pylayer with different input dtype (#37974)

paddle/fluid/operators/py_layer_op.h

@@ -54,7 +54,7 @@ class PyLayerOp : public framework::OperatorWithKernel {
  protected:
   framework::OpKernelType GetExpectedKernelType(
       const framework::ExecutionContext& ctx) const override {
-    auto data_type = OperatorWithKernel::IndicateVarDataType(ctx, "X");
+    auto data_type = paddle::framework::proto::VarType::Type::VarType_Type_FP32;
     return framework::OpKernelType(data_type, ctx.device_context());
   }