Fix namespace select filter tests

Signed-off-by: Sebastian Malton <sebastian@malton.name>

src/renderer/components/+namespaces/namespace-select-filter.test.tsx

@@ -55,6 +55,9 @@ describe("<NamespaceSelectFilter />", () => {
     di.override(directoryForKubeConfigsInjectable, () => "/some-kube-configs");
     di.override(storesAndApisCanBeCreatedInjectable, () => true);
 
+    fetchMock = asyncFn();
+    di.override(fetchInjectable, () => fetchMock);
+
     const createCluster = di.inject(createClusterInjectable);
 
     di.override(hostedClusterInjectable, () => createCluster({
@@ -71,9 +74,6 @@ describe("<NamespaceSelectFilter />", () => {
 
     cleanup = disposer(subscribeStores([namespaceStore]));
 
-    fetchMock = asyncFn();
-    di.override(fetchInjectable, () => fetchMock);
-
     const render = renderFor(di);
 
     result = render((