You just have to install the Mac Intel edition of Matlab, not Mac ARM. It will still work, just via the Rosetta emulation of Intel64 on Arm64, and not natively. In other words, just like it was until now, that is before native Matlab for ARM was released. Remember to install the corresponding 64x86 versions of solvers or other stuff.
GGPLAB is probably platform independent ie. written completely using .m scripts. Whereas cvx (and many solvers) have platform-dependent binary .mex files.