Differentiate icons for Molten Iron/Copper recipe from fluid

[dingus]

Sorry if duplicate, I didn’t see a post for this yet.

This is a Minor usability improvement.

Once you are aware these two share the same icon, it’s not a huge issue to work around, but I’ve seen 4+ instances in the factorio discord so far of people getting frustrated trying to debug their combinator because they used the fluid signal instead of the recipe signal (or vice versa) because they use the first signal they find that matches the familiar icon.

This comes up when trying to set conditions on pumps (using the fluid instead of the recipe) or trying to set up circuit controlled forges, setting its recipe with combinator logic.

[infinigon]

screenshot attached to illustrate the issue more concretely