Summary:
This plugin uses deprecated webpack hooks and prevents us from upgrading
to webpack 5

Test Plan: UI build + test on jenkins should work

Reviewers: zasgar, #engineering

Reviewed By: zasgar, #engineering

Differential Revision: https://phab.corp.pixielabs.ai/D6758

GitOrigin-RevId: 0faf44042b6d93564c313c6112279d1a8ce24ba3