Chore: full react hooks eslint compliance (#7040)

src/widgets/calendar/integrations/ical.test.jsx

@@ -1,6 +1,6 @@
 // @vitest-environment jsdom
 
-import { render, waitFor } from "@testing-library/react";
+import { render, screen, waitFor } from "@testing-library/react";
 import { describe, expect, it, vi } from "vitest";
 
 const { useWidgetAPI } = vi.hoisted(() => ({
@@ -12,6 +12,45 @@ vi.mock("utils/proxy/use-widget-api", () => ({ default: useWidgetAPI }));
 import Integration from "./ical";
 
 describe("widgets/calendar/integrations/ical", () => {
+  it("reports a missing calendar payload without mutating the response", () => {
+    const data = {};
+    useWidgetAPI.mockReturnValue({ data, error: undefined });
+
+    render(
+      <Integration
+        config={{ name: "Work", type: "ical" }}
+        params={{ start: "2099-01-01", end: "2099-01-02" }}
+        setEvents={vi.fn()}
+        hideErrors={false}
+        timezone="utc"
+      />,
+    );
+
+    expect(screen.getByText(/'Work': calendar\.errorWhenLoadingData/)).toBeInTheDocument();
+    expect(data).toEqual({});
+  });
+
+  it("reports a calendar with no events without mutating the response", () => {
+    const data = {
+      data: ["BEGIN:VCALENDAR", "VERSION:2.0", "PRODID:-//Test//EN", "END:VCALENDAR", ""].join("\n"),
+    };
+    const originalData = structuredClone(data);
+    useWidgetAPI.mockReturnValue({ data, error: undefined });
+
+    render(
+      <Integration
+        config={{ name: "Empty", type: "ical" }}
+        params={{ start: "2099-01-01", end: "2099-01-02" }}
+        setEvents={vi.fn()}
+        hideErrors={false}
+        timezone="utc"
+      />,
+    );
+
+    expect(screen.getByText(/'Empty': calendar\.noEventsFound/)).toBeInTheDocument();
+    expect(data).toEqual(originalData);
+  });
+
   it("adds parsed events within the date range", async () => {
     useWidgetAPI.mockReturnValue({
       data: {