add context and repo filter warnings
Created by: unclejustin
Closes: https://github.com/sourcegraph/sourcegraph/issues/26977
https://user-images.githubusercontent.com/1855233/170144906-dbad1384-8038-42e2-aaac-448ad715f5be.mov
Test plan
- Go to create new insight screen
- Add a context or repo filter
- Should give error for both
- Remove context or repo filter and add plain text
- Error should be removed
App preview:
Check out the client app preview documentation to learn more.