fix(vscode-webui): prevent unnecessary notification after new task submit (#711)

This change fixes a bug where unnecessary notifications were sent after submitting a new task. The autoApproveGuard was being set in the wrong order, causing potential race conditions that could trigger notifications when they shouldn't occur.

The fix repositions the autoApproveGuard assignment to ensure it's set before calling sendMessage, preventing the unwanted notifications.

🤖 Generated with [Pochi](https://getpochi.com)

Co-authored-by: Pochi <[email protected]>

Author: liangfung

packages/vscode-webui/src/features/chat/hooks/use-chat-submit.ts

@@ -136,22 +136,22 @@ export function useChatSubmit({
           const parts = prepareMessageParts(t, text, uploadedAttachments);
           logger.debug("Sending message with files");
 
+          autoApproveGuard.current = "auto";
           await sendMessage({
             parts,
           });
-
-          autoApproveGuard.current = "auto";
         } catch (error) {
           // Error is already handled by the hook
           return;
         }
       } else if (allMessages.length > 0) {
         clearUploadError();
         const parts = prepareMessageParts(t, text, []);
+
+        autoApproveGuard.current = "auto";
         await sendMessage({
           parts,
         });
-        autoApproveGuard.current = "auto";
       }
     },
     [