fix(ui): address error on deleting threads or messages (#4048)

Author: liangfung

Diff for: ee/tabby-ui/app/search/components/header.tsx

@@ -77,10 +77,12 @@ export function Header({
   })
 
   const handleDeleteThread = (e: MouseEvent<HTMLButtonElement>) => {
+    if (!threadId) return
+
     e.preventDefault()
     setIsDeleting(true)
     deleteThread({
-      id: threadIdFromURL!
+      id: threadId
     })
   }
 

Diff for: ee/tabby-ui/components/chat/chat.tsx

@@ -288,8 +288,6 @@ export const Chat = React.forwardRef<ChatRef, ChatProps>(
     const onDeleteMessage = async (userMessageId: string) => {
       if (!threadId) return
 
-      // Stop generating first.
-      stop()
       const qaPair = qaPairs.find(o => o.user.id === userMessageId)
       if (!qaPair?.user || !qaPair.assistant) return