Clean test_Elemwise

[PabloRoque]

Description

Minor cleanup of test_Elemwise. Carryover from #1535.

1. Removes a constant exec param since it never changes
2. Introduce ids to improve test readability
3. Removes a dangling context manager

Related Issue

• Closes #
• Related to Remove uses of numba_basic.global_numba_func #1535

Checklist

• Checked that the pre-commit linting/style checks pass
• Included tests that prove the fix is effective or that the new feature works
• Added necessary documentation (docstrings and/or example notebooks)
• If you are a pro: each commit corresponds to a relevant logical change

Type of change

• New feature / enhancement
• Bug fix
• Documentation
• Maintenance
• Other (please specify):

---

📚 Documentation preview 📚: https://pytensor--1536.org.readthedocs.build/en/1536/

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.86%. Comparing base (7efd1c5) to head (dd2c41c).
⚠️ Report is 124 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@ ## main #1536 +/- ## ======================================= Coverage 81.86% 81.86% ======================================= Files 230 230 Lines 52508 52508 Branches 9339 9339 ======================================= Hits 42987 42987 Misses 7089 7089 Partials 2432 2432 

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[ricardoV94]

Thanks