Account window is scrollable when it shouldn't

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Versions

• OS: Debian Bullseye
• Gajim version: 1.4.0-dev1+76501abf
• GTK version: 3.24.24
• Python-nbxmpp version: 2.0.1

Steps to reproduce the problem

1. Open Account window
2. Scroll

Expected behavior

This part of the window should not be scrollable if entire content fits

Actual behavior

It is scrollable