fix(storybook): add required handler props and fix TypeScript errors in component stories (#27187)

web/app/components/base/chat/chat/answer/index.stories.tsx

@@ -1,4 +1,5 @@
 import type { Meta, StoryObj } from '@storybook/nextjs'
+import { WorkflowRunningStatus } from '@/app/components/workflow/types'
 import type { ChatItem } from '../../types'
 import { markdownContent } from './__mocks__/markdownContent'
 import { markdownContentSVG } from './__mocks__/markdownContentSVG'
@@ -33,7 +34,7 @@ const mockedBaseChatItem = {
 } satisfies ChatItem
 
 const mockedWorkflowProcess = {
-  status: 'succeeded',
+  status: WorkflowRunningStatus.Succeeded,
   tracing: [],
 }