Fix/app shell resizing

[owilliams320]

Description

Styling and transition fix for help window when resizing

Test Steps

• [ ] npm run storybook
• [ ] then navigate to the app shell resizing story
• [ ] finally test out the app shell help menu opening and resizing

General Tests for Every PR

• [ ] npm run start still works.
• [ ] npm run lint passes.
• [ ] npm run stylelint passes.
• [ ] npm test passes and code coverage is not lower.
• [ ] npm run build still works.

Screenshots or link to StackBlitz/Plunker

[owilliams320]

:tada: This PR is included in version 8.16.1 :tada:

The release is available on:

• v8.16.1
• GitHub release

Your semantic-release bot :package::rocket: