[Bug report] In the Web UI if a catalog has no schemas API calls are made with null in them

[justinmclean]

Describe what's wrong

The web UI tried to make these calls which fail:
http://localhost:3000/api/metalakes/metalake/catalogs/null
http://localhost:3000/api/metalakes/metalake/catalogs/null/schemas

There errors are hidden and only show up in teh developer console.

(Note also that null coudl be a valid but poor choice of a name for a schema)

Error message and/or stacktrace

 {message: 'Request failed with status code 404', name: 'AxiosError', code: 'ERR_BAD_REQUEST', config: {…}, request: XMLHttpRequest, …}
 M {message: 'Request failed with status code 404', name: 'AxiosError', code: 'ERR_BAD_REQUEST', config: {…}, request: XMLHttpRequest, …}

How to reproduce

Create a metalake and a catalog:
curl -X POST -H "Content-Type: application/json" -d '{"name":"metalake","comment":"Test metalake"}' http://localhost:8090/api/metalakes
curl -X POST -H "Content-Type: application/json" -d '{"name":"test","comment":"Test catalog","type":"RELATIONAL", "provider":"hive","properties":{"metastore.uris":"thrift://0.0.0.0:9083"}}' http://localhost:8090/api/metalakes/metalake/catalogs

View the catalog in the UI.

Additional context

No response

[ch3yne]

I will fix it later.