fix: Fixed regression in compile_commands.json generation

[cmaglie]

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What kind of change does this PR introduce?

Fixed a regression in compile_commands.json generation.
This feature is mainly used in arduino-language-server.

What is the current behavior?

What is the new behavior?

Does this PR introduce a breaking change, and is titled accordingly?

Other information

Fix #2401

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (6c86fa2) 67.27% compared to head (f42483d) 67.31%.
Report is 1 commits behind head on master.

Files	Patch %	Lines
arduino/builder/internal/detector/detector.go	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2427      +/-   ##
==========================================
+ Coverage   67.27%   67.31%   +0.03%     
==========================================
  Files         210      210              
  Lines       20523    20522       -1     
==========================================
+ Hits        13807    13814       +7     
+ Misses       5578     5568      -10     
- Partials     1138     1140       +2     

Flag	Coverage Δ
unit	67.31% <0.00%> (+0.03%)	⬆️

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[alessio-perugini]

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