Adjust the popover component

[Jordi-PV]

Context: Why was this issue created?

The popover component that was added to the UI-library in this issue needs improvements.

What is the goal of this issue?

To improve the component.

What needs to be done to achieve the goal?

To address all comments and CR proposals from the previous PR

Does the issue still need UX or research?

No.

If available: what are the tips for fixing the problem or possible solutions?

What is the expected result/behavior?

That the code follows the conventions and that the popover continues to function correctly.

Should documentation be added or updated for this change? and if so, where?