fix(scanner): correct token offset after comment by accounting for comment character

[baa-ableton]

Before submitting your PR, please confirm the following.

Fixes: #856

Description: Normally, scanning '#' does not increment the offset, causing unexpected results.

• Describe the purpose for which you created this PR.
• Create test code that corresponds to the modification

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.52%. Comparing base (d4021ff) to head (6f36596).
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Additional details and impacted files

@@           Coverage Diff           @@
##           master     #857   +/-   ##
=======================================
  Coverage   80.51%   80.52%           
=======================================
  Files          22       22           
  Lines        6847     6849    +2     
=======================================
+ Hits         5513     5515    +2     
  Misses        913      913           
  Partials      421      421           

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