fix: #4970 (#5093)

web/app/components/workflow/nodes/llm/components/config-prompt.tsx

             <Editor
               instanceId={`${nodeId}-chat-workflow-llm-prompt-editor`}
               title={<span className='capitalize'>{t(`${i18nPrefix}.prompt`)}</span>}
-              value={(payload as PromptItem).edition_type === EditionType.basic ? (payload as PromptItem).text : ((payload as PromptItem).jinja2_text || '')}
+              value={((payload as PromptItem).edition_type === EditionType.basic || !(payload as PromptItem).edition_type) ? (payload as PromptItem).text : ((payload as PromptItem).jinja2_text || '')}
               onChange={handleCompletionPromptChange}
               readOnly={readOnly}
               isChatModel={isChatModel}