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: @shahinyan11
• 🤝 Merged by: @francoisl
• 🐛 Error Message:
  warning: Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: nick-fields/retry@v2. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.
  failure: Already included file name '/home/runner/work/App/App/src/types/utils/asMutable.ts' differs from file name '/home/runner/work/App/App/src/types/utils/AsMutable.ts' only in casing.
  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!

[francoisl]

This is unrelated with the PR we merged, the action failed with:

Error: src/components/HTMLEngineProvider/HTMLRenderers/MentionUserRenderer.tsx(24,23): error TS1261: Already included file name '/home/runner/work/App/App/src/types/utils/asMutable.ts' differs from file name '/home/runner/work/App/App/src/types/utils/AsMutable.ts' only in casing.
  The file is in the program because:
    Imported via '@src/types/utils/asMutable' from file '/home/runner/work/App/App/src/components/HTMLEngineProvider/HTMLRenderers/MentionUserRenderer.tsx'
    Matched by include pattern 'src' in '/home/runner/work/App/App/tsconfig.json'
    Matched by include pattern 'src' in '/home/runner/work/App/App/tsconfig.json'

There's already a conversation about this in Slack - https://expensify.slack.com/archives/C01GTK53T8Q/p1709578543945489