Binary stream chunks not yielded in async iterator for non-event-stream responses

[actuallyzefe]

Binary stream chunks not yielded in async iterator for non-event-stream responses

Bug Description

When using fal.stream() with endpoints that return binary data (e.g., audio/video streams), the async iterator does not yield any chunks even though the stream completes successfully. This affects endpoints like ElevenLabs TTS and any other endpoint that returns non-text/event-stream content types.

Repro

import { fal } from "@fal-ai/client";

const stream = await fal.stream("fal-ai/elevenlabs/tts/turbo-v2.5", {
  input: {
    text: "Hello! This is a test of the text to speech system.",
  },
});

let eventCount = 0;
for await (const event of stream) {
  eventCount++;
  console.log("Event:", event);
}

const result = await stream.done();
console.log("Total events received:", eventCount); // Output: 0 
console.log("Final result:", result); // Output: Uint8Array(713) [...]

Expected behavior: Should receive multiple chunks (e.g., 36 audio chunks)
Actual behavior: Receives 0 chunks, but stream.done() returns the final chunk

[actuallyzefe]

#159