Fixes DOM testing in CI

The Tile components test fail on CI and not on local machine.
The fail seems to be related to the interaction of solid-testing-library
and vitest, adds manual DOM cleanup until I can analyze the issue in depth..

src/components/tile.test.tsx

@@ -1,10 +1,14 @@
-import { render, screen } from "@solidjs/testing-library";
+import { cleanup, render, screen } from "@solidjs/testing-library";
 
 import { Tile } from "./tile";
 
 vi.mock("../game/generator");
 
 describe("<Tile> component", () => {
+  afterEach(async () => {
+    await cleanup();
+  });
+
   it("renders", () => {
     const props = {
       tile: 0b0_010_001_001,