SONARPY-4540 Handle built-in type assignments

[erwan-leforestier-sonarsource]

Summary

Prevents S117 from reporting PascalCase local variables directly assigned from the built-in type() function, including a conditional None fallback.

Changes

• Detect assignments that directly call the resolved built-in type function.
• Support type(...) if condition else None expressions without broadening the exemption to wrapped calls.
• Cover direct, conditional, parenthesized, wrapped, and shadowed type assignments.

Functional Validation

Artifact: SONARPY-4540-fv.zip

Once the file is attached to the PR description, unzip and run:
./run.sh

Expected output:

******************* MASTER *******************
Analyzing "sample.py"...
Results:
    - Rule "python:S117" -> L.3
    - Rule "python:S117" -> L.4
****** Branch "fix/sonarpy-4540-handle-built-in-type-assignments" ******
Analyzing "sample.py"...
Results:
    - Rule "python:S117" -> L.4

⚠️⚠️ This is not ready for review ⚠️⚠️

[erwan-leforestier-sonarsource]

Superseded by the corresponding sonar-python-enterprise PR.

[gitar-bot]

Code Review ✅ Approved

Updates rule S117 to prevent false positives on PascalCase local variables assigned from built-in type() calls, including conditional None fallbacks. No issues found.

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