feat: don't reload the root on searches

Would rather use `submission` here but we have a bug, and it's not being passed in.

app/containers/layout/layout.component.tsx

@@ -194,8 +194,8 @@ export function ErrorBoundary({ error }: { error: Error }) {
   );
 }
 
-export let unstable_shouldReload: ShouldReloadFunction = ({ submission }) => {
-  return submission?.method.toLowerCase() === "post";
+export let unstable_shouldReload: ShouldReloadFunction = ({ url }) => {
+  return !url.pathname.startsWith("/search");
 };
 
 export default function Root() {