Add @override for files in src/lightning/fabric/utilities

[VictorPrins]

This PR adds the @override decorator for all files in src/lightning/fabric/utilities (#18695).

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📚 Documentation preview 📚: https://pytorch-lightning--19293.org.readthedocs.build/en/19293/

[gitguardian]

⚠️ GitGuardian has uncovered 2 secrets following the scan of your pull request.

Please consider investigating the findings and remediating the incidents. Failure to do so may lead to compromising the associated services or software components.

🔎 Detected hardcoded secrets in your pull request

GitGuardian id	Secret	Commit	Filename
-	Generic High Entropy Secret	78fa3af	tests/tests_app/utilities/test_login.py	View secret
-	Base64 Basic Authentication	78fa3af	tests/tests_app/utilities/test_login.py	View secret

🛠 Guidelines to remediate hardcoded secrets

1. Understand the implications of revoking this secret by investigating where it is used in your code.
2. Replace and store your secret safely. Learn here the best practices.
3. Revoke and rotate this secret.
4. If possible, rewrite git history. Rewriting git history is not a trivial act. You might completely break other contributing developers' workflow and you risk accidentally deleting legitimate data.

To avoid such incidents in the future consider

• following these best practices for managing and storing secrets including API keys and other credentials
• install secret detection on pre-commit to catch secret before it leaves your machine and ease remediation.

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[codecov]

Codecov Report

Merging #19293 (4bff3b2) into master (4996965) will decrease coverage by 29%.
Report is 1 commits behind head on master.
The diff coverage is 100%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #19293      +/-   ##
==========================================
- Coverage      84%      54%     -29%     
==========================================
  Files         445      440       -5     
  Lines       37295    37215      -80     
==========================================
- Hits        31149    20170   -10979     
- Misses       6146    17045   +10899