fix: opening the flag panel shifts the main table slightly

[MatheusLasserre]

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Changes

Removed the "!important" from padding-right on class "modal-open", which was forcing the browser to increase the page width when the scrollbar disappears.

The issue was that every time the page had a scroll-bar, opening a modal causes a layout shift, since it makes the scroll-bar disappears. So it was not only on the feature flag modal, but all of them.
Fixes #2984

How did you test this code?

1. Go to any page that has a modal;
2. Get vertical space so the scrollbar appears;
3. Open modal.

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 17, 2023 4:47pm
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[matthewelwell]

This appears to be fixing the same issue as in #2991 but with a different fix implementation. I'm not sure on the benefits / implications of one or the other here.

[github-actions]

Uffizzi Preview deployment-40993 was deleted.

[dabeeeenster]

This appears to be fixing the same issue as in #2991 but with a different fix implementation. I'm not sure on the benefits / implications of one or the other here.

This one looks cleaner! Just testing

[dabeeeenster]

Thanks!

[MatheusLasserre]

You're welcome!