docs: add instructions for skipping pre-commit hooks in CONTRIBUTING.md

[TeckHack76]

Describe your change:

This PR updates the CONTRIBUTING.md file to include a section explaining how to skip pre-commit checks for exploratory or experimental changes using the --no-verify flag.

Note: This should only be used for local testing purposes. Final contributions must pass all pre-commit checks.

Closes #12732

• [ ] Add an algorithm?
• [ ] Fix a bug or typo in an existing algorithm?
• [ ] Add or change doctests?
• [x] Documentation change?

Checklist:

• [x] I have read CONTRIBUTING.md.
• [x] This pull request is all my own work -- I have not plagiarized.
• [x] I know that pull requests will not be merged if they fail the automated tests.
• [x] This PR only changes one documentation file.