default fill color for SVGs

What does this MR do?

Most of the time we want icons to match text color, so do that by default.

set default SVG fill to currentColor, which will inherit the current color value. In any places where we want custom fill values, they can easily use new CSS (or alternate classes).

Are there points in the code the reviewer needs to double check?

I haven't tested all the places I have removed styles, for most of them was checking if there was color on the parent.

Why was this MR needed?

we need to fix our CSS

Screenshots (if relevant)

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary

• Documentation created/updated

• Tests added for this feature/bug

• Review

  • Has been reviewed by UX
  • Has been reviewed by Frontend

• Conform by the style guides

• Squashed related commits together

What are the relevant issue numbers?