Filter returned fields in apis explorer

Signed-off-by: Anastasia Rodionova <argali96@gmail.com>

.changeset/kind-suns-melt.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-api-docs': patch
+---
+
+Added fields filtering in get API entities to avoid the requesting of unused data

plugins/api-docs/src/components/ApiExplorerPage/ApiExplorerPage.tsx

@@ -34,7 +34,19 @@ export const ApiExplorerPage = () => {
   const createComponentLink = useRouteRef(createComponentRouteRef);
   const catalogApi = useApi(catalogApiRef);
   const { loading, error, value: catalogResponse } = useAsync(() => {
-    return catalogApi.getEntities({ filter: { kind: 'API' } });
+    return catalogApi.getEntities({
+      filter: { kind: 'API' },
+      fields: [
+        'apiVersion',
+        'kind',
+        'metadata',
+        'relations',
+        'spec.lifecycle',
+        'spec.owner',
+        'spec.type',
+        'spec.system',
+      ],
+    });
   }, [catalogApi]);
 
   return (