Background remains scrollable when share modal is open

[alegontarz]

Describe the bug

When the sharing modal is open, the page background can still be scrolled. The modal does not properly lock background scrolling.

To Reproduce

Steps to reproduce the behavior:

1. Open a page with sharing functionality.
2. Click the Share action to open the sharing modal.
3. Try scrolling the page in the background while the modal is open.

https://jam.dev/c/b1c72632-3648-4965-b524-f59cb13541da

Expected behavior

Background scrolling is disabled while the share modal is open.

Related

Related to Share links via social network feature