feat(dapp): Implementing Confirmation of dApp disconnect dialog.

[Seitseman]

Closes #14761

What does the PR do

Affected areas

StatusQ checklist

• [ ] add documentation if necessary (new component, new feature)
• [ ] update sandbox app
  • in case of new component, add new component page
  • in case of new features, add variation to existing component page
  • nice to have: add it to the demo application as well
• [ ] test changes in both light and dark theme?

Screenshot of functionality (including design for comparison)

• [ ] I've checked the design and this PR matches it

Cool Spaceship Picture