Fix user-facing typos via codespell

[algonell]

Summary

• There are some user-facing typos in error messages, assertions, exceptions, etc.
• Fix them via codespell.

Testing

• No tests were run.

Documentation

• No documentation updates are needed.

Contributor Checklist

• I have read the contribution guide.
• I have the right to contribute the submitted material under the project terms.
• I have updated tests and documentation where appropriate.
• If I used a coding assistant, I remain responsible for the entire contribution and have reviewed it accordingly.