nostr:npub1tp3tlll4l3rny3nyguta3d333802l8jwxamymww924npyxm2zyequdkugl 
There's a way to fix this, however, according to the #Scrivener manual. 

Go to theHelp menu
Select Scrivener Manual
Type short into the search box top left.
The first item will be the table of contents; click link to section named "Menus and Keyboard Shortcuts"

This section claims to tell you how to change shortcuts using built-in Mac method.  Tell me if it worked!