Fix duplicate state declaration in embedded chatbot hooks

Removed a duplicate declaration of the userSelectedConversation state in hooks.tsx to prevent potential state inconsistencies. Also made a minor formatting fix in the migration script for consistency.

api/migrations/versions/2025_07_08_0001_add_always_new_chat.py

@@ -1,7 +1,7 @@
 """add always_new_chat boolean field to apps and sites (default true)
 
 Revision ID: 0001_add_always_new_chat
-Revises: 
+Revises:
 Create Date: 2025-07-08 00:00:00.000000
 """
 
@@ -21,4 +21,4 @@ def upgrade():
 
 def downgrade():
     for table in ('apps', 'sites'):
-        op.drop_column(table, 'always_new_chat') 
+        op.drop_column(table, 'always_new_chat')

web/app/components/base/chat/embedded-chatbot/hooks.tsx

@@ -120,6 +120,7 @@ export const useEmbeddedChatbot = () => {
     defaultValue: {},
   })
   const allowResetChat = !conversationId
+  const [userSelectedConversation, setUserSelectedConversation] = useState(false)
   const currentConversationId = useMemo(() => {
     if (appData?.site?.always_new_chat && !userSelectedConversation)
       return ''
@@ -164,8 +165,6 @@ export const useEmbeddedChatbot = () => {
   )
 
   const [showNewConversationItemInList, setShowNewConversationItemInList] = useState(false)
-  const [userSelectedConversation, setUserSelectedConversation] = useState(false)
-
   const pinnedConversationList = useMemo(() => {
     return appPinnedConversationData?.data || []
   }, [appPinnedConversationData])