The render function from vitest-browser-svelte and vitest-browser-react is async but tests were calling it synchronously.

Changes:

• Updated 50 test files (25 Svelte + 25 React) to make test functions async and await render calls

Before:

it('renders', () => {
  const { getByTestId } = render(Test);
  expect(getByTestId('root')).toBeInTheDocument();
});

After:

it('renders', async () => {
  const { getByTestId } = await render(Test);
  expect(getByTestId('root')).toBeInTheDocument();
});

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