Investigate workflow job failing on main: typecheck / typecheck

[github-actions]

🚨 Failure Summary 🚨:

• 📋 Job Name: typecheck / typecheck
• 🔧 Failure in Workflow: Process new code merged to main
• 🔗 Triggered by PR: PR Link
• 👤 PR Author: @jayeshmangwani
• 🤝 Merged by: @Gonals
• 🐛 Error Message:
  failure: Unused '@ts-expect-error' directive.
  failure: Type 'string | undefined' is not assignable to type 'string'.
  failure: Process completed with exit code 2.

⚠️ Action Required ⚠️:

🛠️ A recent merge appears to have caused a failure in the job named typecheck / typecheck.
This issue has been automatically created and labeled with Workflow Failure for investigation.

👀 Please look into the following:

1. Why the PR caused the job to fail?
2. Address any underlying issues.

🐛 We appreciate your help in squashing this bug!

[melvin-bot]

This issue has not been updated in over 15 days. @Gonals eroding to Monthly issue.

P.S. Is everyone reading this sure this is really a near-term priority? Be brave: if you disagree, go ahead and close it out. If someone disagrees, they'll reopen it, and if they don't: one less thing to do!

[melvin-bot]

@Gonals, this Monthly task hasn't been acted upon in 6 weeks; closing.

If you disagree, feel encouraged to reopen it -- but pick your least important issue to close instead.