Fix MCP prompt slash commands not appearing. (#8290)

packages/cli/src/ui/AppContainer.tsx

@@ -435,6 +435,7 @@ Logging in with Google... Please restart Gemini CLI to continue.
     setIsProcessing,
     setGeminiMdFileCount,
     slashCommandActions,
+    isConfigInitialized,
   );
 
   const performMemoryRefresh = useCallback(async () => {

packages/cli/src/ui/hooks/slashCommandProcessor.ts

@@ -59,6 +59,7 @@ export const useSlashCommandProcessor = (
   setIsProcessing: (isProcessing: boolean) => void,
   setGeminiMdFileCount: (count: number) => void,
   actions: SlashCommandProcessorActions,
+  isConfigInitialized: boolean,
 ) => {
   const session = useSessionStats();
   const [commands, setCommands] = useState<readonly SlashCommand[]>([]);
@@ -255,7 +256,7 @@ export const useSlashCommandProcessor = (
     return () => {
       controller.abort();
     };
-  }, [config, reloadTrigger]);
+  }, [config, reloadTrigger, isConfigInitialized]);
 
   const handleSlashCommand = useCallback(
     async (