Improve executable lines visitor accuracy

[Slamdunk]

Found while testing the new feature on my projects

[codecov]

Codecov Report

Merging #893 (4e77c76) into 9.2 (a67e775) will increase coverage by 0.04%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##                9.2     #893      +/-   ##
============================================
+ Coverage     83.69%   83.73%   +0.04%     
- Complexity     1122     1127       +5     
============================================
  Files            59       59              
  Lines          3526     3536      +10     
============================================
+ Hits           2951     2961      +10     
  Misses          575      575              

Impacted Files	Coverage Δ
...c/StaticAnalysis/ExecutableLinesFindingVisitor.php	100.00% <100.00%> (ø)
src/Node/File.php	80.13% <0.00%> (+0.27%)	⬆️

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