fix: check perms only when channel is cached

src/helpers/messages/get_message.ts

@@ -1,3 +1,4 @@
+import { cacheHandlers } from "../../cache.ts";
 import { rest } from "../../rest/rest.ts";
 import { structures } from "../../structures/mod.ts";
 import { endpoints } from "../../util/constants.ts";
@@ -5,10 +6,12 @@ import { requireBotChannelPermissions } from "../../util/permissions.ts";
 
 /** Fetch a single message from the server. Requires VIEW_CHANNEL and READ_MESSAGE_HISTORY */
 export async function getMessage(channelId: string, id: string) {
-  await requireBotChannelPermissions(channelId, [
-    "VIEW_CHANNEL",
-    "READ_MESSAGE_HISTORY",
-  ]);
+  if (await cacheHandlers.has("channels", channelId)) {
+    await requireBotChannelPermissions(channelId, [
+      "VIEW_CHANNEL",
+      "READ_MESSAGE_HISTORY",
+    ]);
+  }
 
   const result =
     (await rest.runMethod(