[VL] Add virtual destructor in RowVectorStream

[Zouxxyy]

What changes are proposed in this pull request?

Fix the compile error on my mac

/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/__memory/unique_ptr.h:78:5: error: delete called on non-final 'gluten::RowVectorStream' that has virtual functions but non-virtual destructor [-Werror,-Wdelete-non-abstract-non-virtual-dtor]
   78 |     delete __ptr;
      |     ^
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/__memory/unique_ptr.h:300:7: note: in instantiation of member function 'std::default_delete<gluten::RowVectorStream>::operator()' requested here
  300 |       __deleter_(__tmp);
      |       ^
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/v1/__memory/unique_ptr.h:269:71: note: in instantiation of member function 'std::unique_ptr<gluten::RowVectorStream>::reset' requested here
  269 |   _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX23 ~unique_ptr() { reset(); }
      |                                                                       ^
/project/emr/gluten/cpp/velox/operators/plannodes/RowVectorStream.h:92:3: note: in instantiation of member function 'std::unique_ptr<gluten::RowVectorStream>::~unique_ptr' requested here
   92 |   ValueStream(
      |   ^
1 error generated.
make[2]: *** [velox/CMakeFiles/velox.dir/compute/VeloxBackend.cc.o] Error 1
make[1]: *** [velox/CMakeFiles/velox.dir/all] Error 2
make: *** [all] Error 2

How was this patch tested?

[jinchengchenghh]

Thanks!