* Fix entity UI crash from undefined entity names (fixes#25363)
* Fix mock function type compatibility in test
- Update mock to handle string | undefined parameter
- Maintain test functionality while satisfying type checker
* Simplify approach based on reviewer feedback
- Use String() coercion to preserve numeric entity names (e.g., power strip outlets)
- Single line change instead of complex type validation across multiple files
- Revert stripPrefixFromEntityName to original (no longer needs null handling)
- Remove separate test file, update existing test to expect stringified numbers
- More conservative approach that preserves data rather than replacing with fallbacks
