test(frontend): satisfy HttpResponse.json JsonBodyType constraint

frontend/src/pages/ConnectionsPage.test.tsx

@@ -34,10 +34,10 @@ describe("ConnectionsPage", () => {
     mswServer.use(
       http.get("/api/connection-providers", () => HttpResponse.json(providers)),
       http.get("/api/connections", () =>
-        HttpResponse.json(created ? [created] : [])),
+        HttpResponse.json((created ? [created] : []) as never)),
       http.post("/api/connections", async ({ request }) => {
         created = { id: "c1", ...(await request.json() as object) };
-        return HttpResponse.json(created, { status: 201 });
+        return HttpResponse.json(created as never, { status: 201 });
       }),
     );
     renderWithProviders(<ConnectionsPage />);

frontend/src/pages/WorkflowsPage.test.tsx

@@ -33,7 +33,7 @@ describe("WorkflowsPage", () => {
           id: "new", name: body.name, active: false, graph: emptyGraph,
           createdAt: "x", updatedAt: "x",
         }];
-        return HttpResponse.json(workflows[0], { status: 201 });
+        return HttpResponse.json(workflows[0] as never, { status: 201 });
       }),
     );
     renderWithProviders(<WorkflowsPage />);