Add RA "Core Provided" on the aspect ratio section for every system options menu.

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I'm using an RG405M with GammaOS, and I've noticed there isn't a "Core Provided" setting on the aspect ratio menu section, but only the classic ones (4:3, 16:9, etc.) and the possibility to add a custom value. When I tried to disable it by using an empty custom value, on RA it overrides, obviously, with the custom one. Is there a possibility to add "Core Provided" value to the aspect ratio section to every system? Sorry for my bad english. Keep up the good work!