fix: Fix scrolling issues

[maiertech]

Description of change

I fixed a number of scrolling issues.

Links to any relevant issues

• 393

How the change has been tested

How to test as a reviewer:

• Check out fixed routes in #393.
• For each route, launch UniMe on your desktop and make height of window small enough to trigger scrolling.
• When you scroll all the way down, content should not be covered by the bottom navigation.
• For the prompt routes use these sites for testing:
  • Test offers and sharing credentials: https://ministerie-van-defensie.dev.impierce.com/ (and subsequent steps),
  • Test connection: https://decathlon.co.nl/ or another web shop,
  • Scan QR-codes from screenshots: https://scanqr.org/.

Definition of Done checklist

Add an x to the boxes that are relevant to your changes.

• [x] I have followed the contribution guidelines for this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [ ] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes