test: wrap renderWithProviders in QueryClientProvider

The upstream PR branch's copy of this helper already wraps
QueryClientProvider (needed by any test rendering a component that uses
react-query), but this fork's own main never picked that up -- until the
just-ported rule-form-geodata-tags.test.tsx became the first test here to
render a component (RuleFormModal) whose hooks call useQuery, failing
immediately with "No QueryClient set". Backward compatible: all 12
existing callers pass unchanged since QueryClientProvider is a no-op for
components that don't touch react-query.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

frontend/src/test/test-utils.tsx

@@ -1,10 +1,20 @@
 import type { ReactElement } from 'react';
 import { render, fireEvent } from '@testing-library/react';
+import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
 
 import { ThemeProvider } from '@/hooks/useTheme';
 
-export function renderWithProviders(ui: ReactElement) {
-  return render(<ThemeProvider>{ui}</ThemeProvider>);
+export function makeTestQueryClient() {
+  return new QueryClient({ defaultOptions: { queries: { retry: false } } });
+}
+
+export function renderWithProviders(ui: ReactElement, options?: { queryClient?: QueryClient }) {
+  const queryClient = options?.queryClient ?? makeTestQueryClient();
+  return render(
+    <QueryClientProvider client={queryClient}>
+      <ThemeProvider>{ui}</ThemeProvider>
+    </QueryClientProvider>,
+  );
 }
 
 export function fieldLabels(): string[] {