Use __getitem__ to access channel_id in MessageReference payloads

discord/message.py

@@ -473,7 +473,7 @@ class MessageReference:
     def with_state(cls, state: ConnectionState, data: MessageReferencePayload) -> Self:
         self = cls.__new__(cls)
         self.message_id = utils._get_as_snowflake(data, 'message_id')
-        self.channel_id = int(data.pop('channel_id'))
+        self.channel_id = int(data['channel_id'])
         self.guild_id = utils._get_as_snowflake(data, 'guild_id')
         self.fail_if_not_exists = data.get('fail_if_not_exists', True)
         self._state = state

discord/types/message.py

@@ -25,7 +25,7 @@ DEALINGS IN THE SOFTWARE.
 from __future__ import annotations
 
 from typing import List, Literal, Optional, TypedDict, Union
-from typing_extensions import NotRequired
+from typing_extensions import NotRequired, Required
 
 from .snowflake import Snowflake, SnowflakeList
 from .member import Member, UserWithMember
@@ -81,7 +81,7 @@ class MessageActivity(TypedDict):
 
 class MessageReference(TypedDict, total=False):
     message_id: Snowflake
-    channel_id: Snowflake
+    channel_id: Required[Snowflake]
     guild_id: Snowflake
     fail_if_not_exists: bool