[Bug] Function is_default_profile_pic does not work as expected.

[Shion1305]

Describe the bug / How To Reproduce
My email is [email protected] .
Looks like google returns the following 2 images for my account.

• Default one
• Not default one

GHunt uses is_default_profile_pic to figure out whether the profile image is the default one or not.

GHunt/ghunt/helpers/utils.py

Lines 57 to 66 in 40018b7

	async def is_default_profile_pic(as_client: httpx.AsyncClient, image_url: str) -> Tuple[bool, str]:
	"""
	Returns a boolean which indicates if the image_url
	is a default profile picture, and the flathash of
	the image.
	"""
	flathash = await get_url_image_flathash(as_client, image_url)
	if imagehash.hex_to_flathash(flathash, 8) - imagehash.hex_to_flathash("000018183c3c0000", 8) < 10 :
	return True, str(flathash)
	return False, str(flathash)

However if I pass the url for my default profile picture, it returns True.
So looks like this does not work as expected.

I found that if the profile image is default, it has isDefault field, and otherwise it does not or it is false.
I suggest that it should be judged by the isDefault field, like the logic for cover photos.

GHunt/ghunt/parsers/people.py

Lines 62 to 65 in 40018b7

	elif photo_type == "cover_photo":
	self.url = '='.join(photo_data.get("imageUrl").split("=")[:-1])
	if (isDefault := photo_data.get("isDefault")):
	self.isDefault = isDefault

Also the flag is not used by any other functions, so I think it can be removed.