Onboarding colour scheme is cropped

[Acorn221]

Description

Whenever you go through onboarding, the colour scheme is cropped (even at the default window size)

Here is what it looks like on my windows machine with a 27 inch 4k monitor at 125% zoom:

Here is what it looks like when the PearAI window is full screen:

Fix Acceptance Criteria

• The onboarding "Color Scheme" tab doesn't crop out any of the inner contents when loaded
• The onboarding "Color Scheme" tab can be resized to reasonable sizes and it continues to display the entire preview SVGs

[Himanshu-Singh-Chauhan]

https://github.com/trypear/pearai-submodule/pull/293/files

[nang-dev]

W