So I’m cleaning my bearings and the cups and I’ve just realised one of them looks like it’s been bent inward. Is it supposed to look like this or has something happened?
Expanding on my comment cos a picture is worth many words - this is the line which is the bearing surface, that the ball bearings "bear" onto.
The slightly bronze circle that is closer to the hole in the middle is important as it provides support for the critical area, but the shape doesn't really matter. Yes the inside edge looks slightly deformed, but since its not the track on which the balls roll, then its not important.
Here's a modified cutaway from figure 6
If you want to put this to the test, clean your parts and the old balls and then draw on the bearing race with whiteboard/dry-erase marker. A sharpie might work. Either way, avoid black. Reassemble your bearing completely dry of grease and spin it by hand for a couple revolutions to put witness marks into the dry marker-pen. Only need to do one side of the axle, not both cos its only a test and not for riding. Use the old balls so you don't scuff up new ones.
I think we were talking about different silver circles in comments.
The other possibility is that there is some artefact you can see directly that isn't showing in the photos. Damage like on this spalled cone may not be visible in the photo, which would be completely different.