Fix page change effect being rerun after changes on views (#12869)

`useDefaultHomePagePath` was rerendered each time a view was changed, so
the PageChangeEffect reran every time a view was updated, but we only
want this effect to run on page change.

packages/twenty-front/src/modules/prefetch/states/arePrefetchViewsLoaded.ts

@@ -0,0 +1,6 @@
+import { createState } from 'twenty-ui/utilities';
+
+export const arePrefetchViewsLoadedState = createState<boolean>({
+  key: 'arePrefetchViewsLoadedState',
+  defaultValue: false,
+});