[UI] Sidebar is broken when the hamburger menu is enabled.

[salihgueler]

Describe the bug

To Reproduce
Steps to reproduce the behavior:

1. Go to docs.amplify.aws
2. Make your screen smallar
3. Click on the hamburger menu
4. See error

Desktop (please complete the following information):

• OS: macOS
• Browser chrome
• Version 129.0.6668.60 (Official Build) (arm64)