Add radar coverage info to Cargo landing pad tooltip

[Havitner]

Unlike the Radar, the Cargo landing pad on-hover tooltip doesn't mention that it provides radar coverage (the factoriopedia entry does, however).

I spent several minutes playing 'hunt the radar dish' to figure out where the visibility was coming from before I figured it out.

02-15-2025, 21-22-26.png (216.29 KiB) Viewed 166 times

02-15-2025, 21-22-33.png (1.01 MiB) Viewed 166 times

02-15-2025, 21-22-39.png (680.05 KiB) Viewed 166 times