project build error: missing useEffect dependency for assigned workflows

[eatyourgreens]

Package

Choose from the list:

• app-content-pages
• app-project
• lib-classifier
• lib-panoptes-js
• lib-react-components
• unknown

Describe the bug

./src/hooks/useAssignedLevel.js
35:5  Warning: React Hook useEffect has a missing dependency: 'checkAssignedLevel'. Either include it or remove the dependency array.  react-hooks/exhaustive-deps

Missing dependencies in effect hooks lead to subtle bugs that can be hard to track down eg. the recent problems with the AnimatedNumber component were caused by a useEffect hook that didn't run when a dependency changed.

To Reproduce

Run yarn build for the project app.

Expected behavior

useEffect hooks must declare all reactive dependencies in their dependency array, or redefine dependencies so that they aren't reactive values.

[eatyourgreens]

While working on #6219, I also discovered that the workflow assignment tests are broken in ClassifyPageContainer. I included a fix in that PR.