Unify BaseObjVar type with SVFVar type

[yuleisui]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 70.83333% with 14 lines in your changes missing coverage. Please review.
✅ Project coverage is 61.84%. Comparing base (2fd92c6) to head (7802bb4).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
svf/include/SVFIR/SVFIR.h	65.21%	8 Missing ⚠️
svf-llvm/lib/SVFIRBuilder.cpp	70.00%	3 Missing ⚠️
svf/include/SVFIR/SVFVariables.h	80.00%	2 Missing ⚠️
svf/lib/SVFIR/PAGBuilderFromFile.cpp	0.00%	1 Missing ⚠️

❌ Your project status has failed because the head coverage (61.84%) is below the target coverage (63.50%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1759      +/-   ##
==========================================
- Coverage   63.79%   61.84%   -1.95%     
==========================================
  Files         244      244              
  Lines       25980    24401    -1579     
  Branches     4581     4582       +1     
==========================================
- Hits        16573    15091    -1482     
+ Misses       9407     9310      -97     

Files with missing lines	Coverage Δ
svf/include/SVFIR/SVFStatements.h	89.77% <100.00%> (-1.44%)	⬇️
svf/lib/SVFIR/SVFVariables.cpp	42.72% <100.00%> (-23.94%)	⬇️
svf/lib/SVFIR/PAGBuilderFromFile.cpp	0.00% <0.00%> (ø)
svf/include/SVFIR/SVFVariables.h	69.46% <80.00%> (-1.30%)	⬇️
svf-llvm/lib/SVFIRBuilder.cpp	86.81% <70.00%> (+0.03%)	⬆️
svf/include/SVFIR/SVFIR.h	90.60% <65.21%> (+0.03%)	⬆️

... and 198 files with indirect coverage changes

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