Fix visual test on preview toggle — radicle-explorer

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   await expect(page.getByText("1. https://radicle.xyz ↩")).toBeVisible();
   await expect(page).toHaveScreenshot({ fullPage: true });
   await page.getByText("Plain").click();
   await page.getByText("Code").click();
   await expect(
     page.locator(
       "text=This is an example footnote[^0]. And some radicle[^1] examples.",