Item cannot be resolved for sell listings of Strange items

[StrangePlay02]

In the documentation https://api.backpack.tf/api/index.html#/classifieds/post_v2_classifieds_listings_batch,

Models > listingResolvable specifies that if id is set, listing is assumed to be sell and if item is set, it is assumed to be a buy:

The code currently sets item for both intents (and specify id only when selling), and may lead to conflicts in resolving the item if both inputs are sent.

def construct_listing(
    sku: str, intent: str, currencies: dict, details: str, asset_id: int = 0
) -> dict:
    if intent not in ["buy", "sell"]:
        raise InvalidIntent(f"{intent} must be buy or sell")

    listing = {
        "item": construct_listing_item(sku),
        "buyout": True,
        "offers": True,
        "promoted": False,
        "details": details,
        "currencies": Currencies(**currencies).__dict__,
    }

    if intent == "sell":
        listing["id"] = asset_id

    return listing

I think we may need to consider setting listing["item"] only for buy listings. While it only happens for Strange items, I also do not consistently face it and has succeeded few times. Strange indeed