fix: model changed but completion params not change (#16156)

web/app/components/workflow/nodes/llm/panel.tsx

     return forms
   })()
 
+  const handleModelChange = useCallback((model: {
+    provider: string
+    modelId: string
+    mode?: string
+  }) => {
+    handleCompletionParamsChange({})
+    handleModelChanged(model)
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [])
+
   return (
     <div className='mt-2'>
       <div className='px-4 pb-4 space-y-4'>
             provider={model?.provider}
             completionParams={model?.completion_params}
             modelId={model?.name}
-            setModel={handleModelChanged}
+            setModel={handleModelChange}
             onCompletionParamsChange={handleCompletionParamsChange}
             hideDebugWithMultipleModel
             debugWithMultipleModel={false}