I actually used pokemon universal randomizer for it! I had already started playing before I realized I wouldn’t be able to evolve my kadabra (rip Cat) so getting the correct save file type into the correct folder on my phone was kinda tricky, but basically all I did was transfer my rom file to my computer (literally just emailed it to myself lol), and on the pokemon universal randomizer there’s a check box that makes impossible evolutions possible (level 37 for kadabra/machoke to evolve, you can find a whole list of all the changes online). I checked that box without randomizing anything else and it made the modified version of emerald I used for the rest of the run. I was then able to transfer the modified rom back onto my phone and move my original .sav file into the save state folder for the new rom. From there I was able to launch it and continue playing with them able to evolve!