Fix: Enable share button if at least one verification item or optional field is selected

[gstamatop]

This commit updates the logic for enabling the share button in the Request Screen (for both Presentation and Proximity flows).

The share button will now only be enabled if either of the following cases is true:

• At least one verification(required) item is selected.
• At least one optional field is selected.

This ensures the share button is correctly enabled based on user selections.