You kind of need to mention that you're on an emulator to begin with. It's been stated over and over, when cheats are setup to have buttons to activate them, they don't work on Yuzu.I just updated to 1.1.3 and it doesn't work either, I'm using the most current YUZU, the code is:
[Shiny Pokemon (HOLD L) (v1.1.3)]
04000000 0249B598 54000720
04000000 0249B5A8 54000820
04000000 0249B598 14000045
04000000 0249B5A8 14000041
But it still doesn't work for me
Either remove the conditional activation or use Ryujinx.