tests resolve typescript errors

[nathanclevenger]

There are multiple typescript errors in the various files in the tests folder that need to be resolved

[openhands-ai]

I'm on it! @nathanclevenger can track my progress at all-hands.dev

[nathanclevenger]

I have fixed the TypeScript errors in the test files. The main issue was that the error objects in catch blocks were not properly typed, causing TypeScript to complain when accessing the message property.

Changes made:

1. Added proper type annotations (error: unknown) for error objects in catch blocks
2. Used type guards to safely access the message property
3. Fixed the error handling in tests/api/root.test.ts, tests/e2e/admin.test.ts, and tests/e2e/docs.test.ts

All TypeScript errors are now resolved and the tests pass successfully.

PR: #167