排队发送后不再立刻抹掉「已加入发送队列」提示

- apps/ai-game-creator-shell/src/view/project-development/chat/controller/useDirectProjectChatController.ts 拆出 clearDraftInput（只清输入与附件），排队成功分支改用它
- 原先同一事件里先 enqueueTurn 写提示、紧接着 clearPendingInput 把 composerNotice 置空，React 批处理下用户永远看不到队列确认文案

apps/ai-game-creator-shell/src/view/project-development/chat/controller/useDirectProjectChatController.ts

@@ -346,12 +346,16 @@ export function useDirectProjectChatController({
     );
   }
 
-  function clearPendingInput() {
+  function clearDraftInput() {
     setChatInput('');
     setChatReferences([]);
     setChatContent([]);
     setAttachments([]);
     setAttachmentNotice('');
+  }
+
+  function clearPendingInput() {
+    clearDraftInput();
     setComposerNotice('');
   }
 
@@ -373,7 +377,8 @@ export function useDirectProjectChatController({
           ),
         })
       ) {
-        clearPendingInput();
+        // 只清草稿：enqueueTurn 刚写入的「已加入发送队列」提示必须留给用户看到。
+        clearDraftInput();
       }
       return;
     }