Summary:
Add `react-is` to satisfy peer dependency for @storybook/addon-essentials
Upgrade `eslint-plugin-enzyme` to be compatible with our version of `eslint`

Test Plan: Jenkins + yarn build

Reviewers: zasgar, michelle, #engineering

Reviewed By: michelle, #engineering

Differential Revision: https://phab.corp.pixielabs.ai/D6719

GitOrigin-RevId: ee50ed5da7353044064a7c2ed2ecee5a25143bc5