Rework hash join build mapper

[andyfengHKU]

No description provided.

[codecov]

Codecov Report

Patch coverage: 98.78% and project coverage change: -0.01 ⚠️

Comparison is base (b2c85b2) 91.44% compared to head (fb68844) 91.43%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1659      +/-   ##
==========================================
- Coverage   91.44%   91.43%   -0.01%     
==========================================
  Files         727      726       -1     
  Lines       26375    26362      -13     
==========================================
- Hits        24118    24105      -13     
  Misses       2257     2257              

Impacted Files	Coverage Δ
src/include/binder/expression/expression.h	91.66% <ø> (ø)
src/include/processor/mapper/plan_mapper.h	100.00% <ø> (ø)
...ude/processor/operator/hash_join/hash_join_probe.h	100.00% <ø> (ø)
...c/include/processor/operator/intersect/intersect.h	100.00% <ø> (ø)
src/binder/expression/expression.cpp	83.60% <85.71%> (+0.27%)	⬆️
src/include/processor/operator/cross_product.h	100.00% <100.00%> (ø)
...ude/processor/operator/hash_join/hash_join_build.h	100.00% <100.00%> (ø)
...ude/processor/operator/intersect/intersect_build.h	100.00% <100.00%> (ø)
src/include/processor/result/factorized_table.h	96.82% <100.00%> (ø)
src/processor/mapper/map_cross_product.cpp	100.00% <100.00%> (ø)
... and 4 more

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