fix compilation error of graphx runner

[siyuan0322]

Fix an include error under gcc 10.2.1

[ 94%] Building CXX object CMakeFiles/graphx_runner.dir/core/java/javasdk.cc.o
In file included from /home/graphscope/graphscope/analytical_engine/core/java/graphx_runner.cc:15:
/home/graphscope/graphscope/analytical_engine/core/java/graphx_runner.h:46:15: error: expected constructor, destructor, or type co
nversion before ‘(’ token
   46 | DECLARE_string(task);
      |               ^
/home/graphscope/graphscope/analytical_engine/core/java/graphx_runner.h:47:15: error: expected constructor, destructor, or type co
nversion before ‘(’ token
   47 | DECLARE_string(ipc_socket);

[codecov-commenter]

Codecov Report

Merging #2228 (10142c0) into main (a11b453) will increase coverage by 32.97%.
The diff coverage is n/a.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2228       +/-   ##
===========================================
+ Coverage   40.19%   73.16%   +32.97%     
===========================================
  Files          87       89        +2     
  Lines        9847     9884       +37     
===========================================
+ Hits         3958     7232     +3274     
+ Misses       5889     2652     -3237     

Impacted Files	Coverage Δ
python/graphscope/version.py	100.00% <0.00%> (ø)
python/graphscope/__init__.py	82.14% <0.00%> (ø)
python/graphscope/framework/dag.py	81.63% <0.00%> (+1.02%)	⬆️
python/graphscope/client/utils.py	86.66% <0.00%> (+3.63%)	⬆️
python/graphscope/client/rpc.py	86.25% <0.00%> (+9.16%)	⬆️
python/graphscope/framework/operation.py	87.67% <0.00%> (+10.95%)	⬆️
python/graphscope/client/session.py	76.47% <0.00%> (+11.76%)	⬆️
python/graphscope/framework/graph_schema.py	64.84% <0.00%> (+12.10%)	⬆️
python/graphscope/analytical/app/bfs.py	100.00% <0.00%> (+12.50%)	⬆️
python/graphscope/framework/errors.py	93.65% <0.00%> (+14.28%)	⬆️
... and 39 more

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