[3.x] Check status code when downloading file

[Olegt0rr]

Similar to #799, but related to 3.x.
Don't forget to read @Tishka17's suggestions in the parent issue.

aiogram/aiogram/client/session/aiohttp.py

Lines 156 to 163 in 6e39f9f

	async def stream_content(
	self, url: str, timeout: int, chunk_size: int
	) -> AsyncGenerator[bytes, None]:
	session = await self.create_session()
	async with session.get(url, timeout=timeout) as resp:
	async for chunk in resp.content.iter_chunked(chunk_size):
	yield chunk