Add "Clean Nuclear Fallout" to "Unit Controls" widget

[blabber]

fallout.svg is based on https://commons.wikimedia.org/wiki/File:Radioactive_White.svg

Closes #2273

[blabber]

Without this PR:

With this PR:

[jwrober]

@blabber would you pls upload the save game you have w/ fallout?

[blabber]

@blabber would you pls upload the save game you have w/ fallout?

🫴 fallout.sav.xz.zip

[jwrober]

You need to add fill="#000" to the top level <svg open tag for it to work for both light and dark themes. On my local I did this

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" fill="#000" ...

[blabber]

You need to add fill="#000" to the top level <svg open tag for it to work for both light and dark themes.

I changed fallout.svg as requested, but to be honest I still don't see any difference in light and dark theme (see screenshots below). Which irritates me even more, is that other icons (for example mine.svg) don't have this fill in their opening <svg ... tag.

Screenshots

Light theme

Dark theme

[jwrober]

Thanks for the update and submission of the icon. I am able to reproduce on my local too. I guess something is diff with how we do the unit controls bar vs other UI elements in the game that need that fill code.