style: Enable scrollability in BaseWindow and remove it in WorkPhase

[s-gbz]

Enable scrollability in BaseWindow and remove it in WorkPhase Also: Remove horizontal scrollability from body

Closes #82

Reviewer's task:

• [x] I didn't see no code smells
• [x] The live preview works as expected -> no regressions found

[vercel[bot]]

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Name	Status	Preview	Updated
screenario-react	✅ Ready (Inspect)	Visit Preview	Aug 23, 2022 at 2:25PM (UTC)

[liam-k]

noice

[s-gbz]

Please don't forget to tick off the reviewer tasks @liam-k ! Other than that, thanks for keeping the PR in mind and merging tonight.