✨ add unknown sticker format type to StickerFormatType enum

Author: Paillat-dev

discord/enums.py

@@ -630,6 +630,7 @@ class StickerType(Enum):
 class StickerFormatType(Enum):
     """Sticker format Type"""
 
+    unknown = 0
     png = 1
     apng = 2
     lottie = 3
@@ -642,9 +643,9 @@ def file_extension(self) -> str:
             StickerFormatType.apng: "png",
             StickerFormatType.lottie: "json",
             StickerFormatType.gif: "gif",
+            StickerFormatType.unknown: "unknown",
         }
-        # TODO: Improve handling of unknown sticker format types if possible
-        return lookup.get(self, "png")
+        return lookup.get(self, StickerFormatType.unknown)
 
 
 class InviteTarget(Enum):
@@ -833,8 +834,8 @@ def from_datatype(cls, datatype):
         if issubclass(datatype, float):
             return cls.number
 
-        from .commands.context import ApplicationContext  # noqa: PLC0415
-        from .ext.bridge import BridgeContext  # noqa: PLC0415
+        from .commands.context import ApplicationContext
+        from .ext.bridge import BridgeContext
 
         if not issubclass(
             datatype, (ApplicationContext, BridgeContext)