refactor: remove deprecated `getproperty` behavior, disable `setproperty!` on systems#3655

AayushSabharwal merged 3 commits intoSciML:masterSciML/ModelingToolkit.jl:masterfrom

AayushSabharwal:as/rm-get-set-propertyAayushSabharwal/ModelingToolkit.jl:as/rm-get-set-propertyCopy head branch name to clipboard