Remove sourcePath validation from IntrospectorBuilder

[TharmiganK]

Purpose

$Subject

Hence the default source path is the persist directory, we do not need this validation

Examples

N/A

Checklist

• Linked to an issue
• Updated the specification
• Updated the changelog
• Added tests

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 85.83%. Comparing base (e53e5df) to head (3dbdd7d).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #436      +/-   ##
==========================================
+ Coverage   85.82%   85.83%   +0.01%     
==========================================
  Files          68       68              
  Lines        6667     6665       -2     
  Branches      890      889       -1     
==========================================
- Hits         5722     5721       -1     
  Misses        677      677              
+ Partials      268      267       -1     

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