test: make tests less fragile

tests/unit/routes/page.test.ts

@@ -1,11 +1,10 @@
-import { render } from "@testing-library/svelte";
+import { render, screen } from "@testing-library/svelte";
 import { describe, expect, it } from "vitest";
 import PageTest from "./PageTest.svelte";
 
 describe("+page.svelte", () => {
   it("should render without crashing", () => {
     render(PageTest);
-    const mainGrid = document.querySelector(".main-grid");
-    expect(mainGrid).toBeInTheDocument();
+    expect(screen.getByText("Тексты панелей")).toBeInTheDocument();
   });
 });