Hide selection-type args from command palette while in an edit flow (#5763)

* Allow `hidden` config to be a callback

* Hide selection type args if `nodeToEdit` is present

in workflows that have an edit flow set up

* Remove Selection from headerArguments in edit flow tests

src/components/CommandBar/CommandBarHeader.tsx

@@ -17,7 +17,12 @@ function CommandBarHeader({ children }: React.PropsWithChildren<{}>) {
     if (!selectedCommand?.args) return undefined
     const s = { ...selectedCommand.args }
     for (const [name, arg] of Object.entries(s)) {
-      if (arg.hidden) delete s[name]
+      if (
+        typeof arg.hidden === 'function'
+          ? arg.hidden(commandBarState.context)
+          : arg.hidden
+      )
+        delete s[name]
     }
     return s
   }, [selectedCommand])