feat: enhance handling of icon_url in unisat parse_collection

Author: SimSef

blockapi/v2/api/nft/unisat.py

@@ -293,8 +293,12 @@ def parse_collection(self, fetch_result: FetchResult) -> ParseResult:
         # Format the icon URL
         icon = stats.get("icon")
         icon_url = None
+
         if icon:
-            icon_url = f"https://static.unisat.io/content/{icon}"
+            if icon.startswith(("http://", "https://")):
+                icon_url = icon
+            else:
+                icon_url = f"https://static.unisat.io/content/{icon.lstrip('/')}"
 
         floor_price = raw_to_decimals(stats.get("floorPrice", 0), self.coin.decimals)