Review radio button and checkbox icons in the application

[shaunop]

Projects and impact section of the round application:

1. The radio buttons look thin and small compared to checkbox.
2. The radio buttons on the higher level categories are smaller than on subcategories.

Screenshots of current UI:

In the design file, I use remix icons for these:

[linear[bot]]

AGORA-2892 Review radio button and checkbox icons in the application