Vulnerability Finding Modal: Reduce padding and increase title

Problem

The vulnerability finding modal's padding is quite a bit larger than other modals. It contains a gl-p-5 class that adds (unnecessary?) additional padding. Pajamas Design docs for Modals don't have this.

At the same time, the title of our modal is also smaller than we see in Pajamas design.

Screenshot_2025-08-29_at_10.51.55

Proposal

  1. Remove gl-p-5 extra padding
  2. Change class of h2 of title from gl-m-0 gl-text-lg to modal-title

Screenshot_2025-08-29_at_10.55.36

Screenshot_2025-08-29_at_10.55.43