fix: set fallback description for chat input commands if none provided

Author: notunderctrl

packages/commandkit/src/app/handlers/AppCommandHandler.ts

@@ -1,4 +1,5 @@
 import {
+  ApplicationCommandType,
   AutocompleteInteraction,
   Awaitable,
   Collection,
@@ -679,7 +680,7 @@ export class AppCommandHandler {
           data: {
             command: {
               name: command.name,
-              description: `${command.name} commands`,
+              description: `${command.name} command`,
               type: 1,
             },
           },
@@ -697,6 +698,13 @@ export class AppCommandHandler {
         );
       }
 
+      if (
+        commandFileData.command.type === ApplicationCommandType.ChatInput &&
+        !commandFileData.command.description
+      ) {
+        commandFileData.command.description = `${command.name} command`;
+      }
+
       let handlerCount = 0;
 
       for (const [key, propValidator] of Object.entries(commandDataSchema) as [