[commands] Fix Context.from_interaction derived Message.type

The previous Message.type when accessed from Context would be an
unknown enum type because the enum was double nested when the proper
type expected by the synthetic payload was an int not an enum.

Fix #10382

discord/ext/commands/context.py

@@ -259,6 +259,7 @@ class Context(discord.abc.Messageable, Generic[BotT]):
 
         bot: BotT = interaction.client
         data: ApplicationCommandInteractionData = interaction.data  # type: ignore
+        type_ = data.get('type', 1)
         if interaction.message is None:
             synthetic_payload = {
                 'id': interaction.id,
@@ -268,7 +269,7 @@ class Context(discord.abc.Messageable, Generic[BotT]):
                 'tts': False,
                 'pinned': False,
                 'edited_timestamp': None,
-                'type': MessageType.chat_input_command if data.get('type', 1) == 1 else MessageType.context_menu_command,
+                'type': MessageType.chat_input_command.value if type_ == 1 else MessageType.context_menu_command.value,
                 'flags': 64,
                 'content': '',
                 'mentions': [],
@@ -288,7 +289,7 @@ class Context(discord.abc.Messageable, Generic[BotT]):
         else:
             message = interaction.message
 
-        prefix = '/' if data.get('type', 1) == 1 else '\u200b'  # Mock the prefix
+        prefix = '/' if type_ == 1 else '\u200b'  # Mock the prefix
         ctx = cls(
             message=message,
             bot=bot,