fix test error related to root by setting library output directory

[wwuoneway]

ROOT usually tries to load *.so and find *.pcm under the same directory,
however, add_library(${FORM_DATA_PROD_LIB_NAME} SHARED track_start.cpp) in data_products/CMakeLists.txt
will produce .pcm and .rootmap under current folder (but .so is under main build/)
the change provides a solution that sets form data product lib output to main build folder to avoid ROOT errors.

[wwuoneway]

@phlexbot format

[github-actions]

Format Fixes Applied

❌ cmake-format workflow failure
⚠️ YAML formatter fixes available as patch fix.patch

⚠️ Note: Some issues may require manual review.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

@@            Coverage Diff             @@
##             main     #432      +/-   ##
==========================================
+ Coverage   84.24%   84.33%   +0.08%     
==========================================
  Files         127      127              
  Lines        3314     3325      +11     
  Branches      564      564              
==========================================
+ Hits         2792     2804      +12     
  Misses        326      326              
+ Partials      196      195       -1     

Flag	Coverage Δ
unittests	84.33% <ø> (+0.08%)	⬆️

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see 3 files with indirect coverage changes

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[aolivier23]

Looks good to me. I appreciate that this change uses variables for maintainability and keeps changes to a minimum.

[greenc-FNAL]

Review the full CodeQL report for details.

[aolivier23]

LGTM

[gemmeren]

Thanks Wanwei