Exclude variables from rendered workpad (#72970) (#73206)

Author: Corey Robertson

x-pack/plugins/canvas/public/state/selectors/workpad.ts

@@ -497,7 +497,7 @@ export function getRenderedWorkpad(state: State) {
   const workpad = getWorkpad(state);
 
   // eslint-disable-next-line no-unused-vars
-  const { pages, ...rest } = workpad;
+  const { pages, variables, ...rest } = workpad;
 
   return {
     pages: renderedPages,