test(F0Card): add unit test for imageAspectRatio="16/9"

[Copilot]

The imageAspectRatio="16/9" feature added in #3652 had no unit test coverage.

Changes

• New test case in Card.test.tsx: renders F0Card with imageAspectRatio="16/9" and asserts:
  • Image container has aspect-video class
  • No fixed-height class from imageSizeClassMap (h-24 through h-64) is applied

it("renders image container with aspect-video class when imageAspectRatio is 16/9", () => {
  render(
    <F0Card
      title="Aspect Ratio Card"
      image="/path/to/test-image.jpg"
      imageAspectRatio="16/9"
    />
  )

  const img = screen.getByRole("img", { name: "Aspect Ratio Card" })
  const imageContainer = img.parentElement

  expect(imageContainer).toHaveClass("aspect-video")
  expect(imageContainer).not.toHaveClass("h-32") // default imageSize="sm"
  // ...all other h-* sizes also asserted absent
})

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