sets missing v7_startTransition flag to true in test routers

Author: cammiida

src/test/renderWithProviders.tsx

@@ -125,7 +125,6 @@ export const makeMutationMocks = <T extends (name: keyof AppMutations) => any>(
   doPostStatelessFormData: makeMock('doPostStatelessFormData'),
   doSetSelectedParty: makeMock('doSetSelectedParty'),
   doInstantiate: makeMock('doInstantiate'),
-  doProcessNext: makeMock('doProcessNext'),
   doInstantiateWithPrefill: makeMock('doInstantiateWithPrefill'),
   doPerformAction: makeMock('doPerformAction'),
   doSubformEntryAdd: makeMock('doSubformEntryAdd'),
@@ -271,7 +270,12 @@ export function InstanceRouter({
     },
   );
 
-  return <RouterProvider router={router} />;
+  return (
+    <RouterProvider
+      router={router}
+      future={{ v7_startTransition: true }}
+    />
+  );
 }
 
 interface ProvidersProps extends PropsWithChildren {

src/test/routerUtils.tsx

@@ -21,5 +21,10 @@ export const PageNavigationRouter =
       },
     );
 
-    return <RouterProvider router={router} />;
+    return (
+      <RouterProvider
+        router={router}
+        future={{ v7_startTransition: true }}
+      />
+    );
   };