feat: hide trash button during collaboration

[ad1992]

remove-delete.mp4

[vercel]

This pull request is being automatically deployed with Vercel (learn more).
To see the status of your deployments, click below or on the icon next to each commit.

excalidraw – ./

🔍 Inspect: https://vercel.com/excalidraw/excalidraw/H2UfJJUYFWg8nxtWo6RgnkWyz9d7
✅ Preview: https://excalidraw-git-aakansha-hide-delete-excalidraw.vercel.app

excalidraw-package-example – ./src/packages/excalidraw

🔍 Inspect: https://vercel.com/excalidraw/excalidraw-package-example/CykxxBLXJVMhMb45eYuRi3akv9cm
✅ Preview: https://excalidraw-package-example-git-aakansha-hide-delete-excalidraw.vercel.app

[dwelle]

I'd only hide it visually so there's no jump. So using a combo of visibility: hidden & pointer-events: none, or replacing it with a placeholder that has the same width.