Merge pull request #4551 from ChrisRackauckas-Claude/cc/supports-init-get-jumps

supports_initialization: use get_jumps to keep Enzyme readonly

Author: ChrisRackauckas

lib/ModelingToolkitBase/src/systems/system.jl

@@ -1503,7 +1503,7 @@ function Base.showerror(io::IO, err::EventsInTimeIndependentSystemError)
 end
 
 function supports_initialization(sys::System)
-    return isempty(get_systems(sys)) && isempty(jumps(sys)) &&
+    return isempty(get_systems(sys)) && isempty(get_jumps(sys)) &&
         isempty(get_costs(sys)) && isempty(get_constraints(sys))
 end