fix(monorepo): do not set include-path if workdir is set

[orhun]

Motivation and Context

Fixes #996

How Has This Been Tested?

Locally.

Types of Changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation (no code change)
• Refactor (refactoring production code)
• Other

Checklist:

• My code follows the code style of this project.
• I have updated the documentation accordingly.
• I have formatted the code with rustfmt.
• I checked the lints with clippy.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes missing coverage. Please review.

Project coverage is 42.65%. Comparing base (6a1157b) to head (535ca44).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
git-cliff/src/lib.rs	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1022      +/-   ##
==========================================
- Coverage   42.70%   42.65%   -0.04%     
==========================================
  Files          21       21              
  Lines        1745     1747       +2     
==========================================
  Hits          745      745              
- Misses       1000     1002       +2     

Flag	Coverage Δ
unit-tests	42.65% <0.00%> (-0.04%)	⬇️

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