Use vitest's default for scoped class names

It reduces confusion when reading snapshots if class names are still scoped to their respective CSS modules. It also discourages the use of class names in tests, which is a good thing. (https://testing-library.com/docs/guiding-principles)

Thanks to Johannes for the suggestion.

vitest.config.ts

@@ -18,12 +18,7 @@ export default defineConfig((configEnv) =>
             extends: true,
             test: {
               name: "unit",
-              css: {
-                include: /.+/,
-                modules: {
-                  classNameStrategy: "non-scoped",
-                },
-              },
+              css: { include: /.+/ },
               setupFiles: ["src/vitest.setup.ts"],
               environment: "jsdom",
               include: ["src/**/*.test.ts", "src/**/*.test.tsx"],