fix(huggingface): complete the Inference Providers router migration

Replace the retired api-inference.huggingface.co host with the Inference
Providers router (router.huggingface.co): imageConfig.modelMap resolves
Hub ids to provider-resolved ids, image-to-image models receive the
source image in inputs with the prompt under parameters.prompt, and a
new sttConfig wires the hf-inference ASR route. The image catalog grows
to 23 models, dead whisper-small is replaced by whisper-large-v3-turbo,
the unusable "language" param is dropped, and edit models declare the
edit capability so the dashboard offers a source image. Adds unit and
end-to-end coverage plus a model-id guard on custom endpoints.

src/app/(dashboard)/dashboard/media-providers/[kind]/[id]/components/GenericExampleCard.js

@@ -9,8 +9,14 @@ import { Row, KIND_EXAMPLE_CONFIG } from "./exampleShared";
 
 const CLOUDFLARE_TEST_IMAGE_URL = "https://pub-1fb693cb11cc46b2b2f656f51e015a2c.r2.dev/dog.png";
 const CLOUDFLARE_TEST_MASK_URL = "https://pub-1fb693cb11cc46b2b2f656f51e015a2c.r2.dev/dog-mask.png";
+// HuggingFace router edit models need a source image; reuse the public dog sample so
+// the card is runnable as-is. The router derives it from inputs, not from the Hub host.
+const HUGGINGFACE_TEST_IMAGE_URL = CLOUDFLARE_TEST_IMAGE_URL;
 
 function getImageEditDefaults(providerId, modelId) {
+  if (providerId === "huggingface") {
+    return { image: HUGGINGFACE_TEST_IMAGE_URL };
+  }
   if (providerId !== "cloudflare-ai") return {};
   if (modelId === "@cf/runwayml/stable-diffusion-v1-5-img2img") {
     return { image: CLOUDFLARE_TEST_IMAGE_URL };