No, developer mode uses different per-boot derived keys so it can't decrypt the retail version of it in dev mode. If I remember right, the "ConnectedStorage" without the "-retail" is the Developer Scratch mounted to D:\ while in Developer Mode.
Saves are stored in ConnectedStorage-retail (XVD) stored on the "Temp" partition for legacy but for Series X/S it'll be on System Support. It's per-console encrypted and no way to get keys at the moment.
Unfortunately, you can't access the...
Only thing drive me crazy is all these new horror games nowadays is its so dark, all time. I can't even play them. I understand they trying to create spooky but be creative a little, not just darkness with pop out scare scenes.