feat(web): Contains sys.files in the default template. (#21476)

web/app/components/workflow-app/hooks/use-workflow-template.ts

         ...nodesInitialData.llm,
         memory: {
           window: { enabled: false, size: 10 },
-          query_prompt_template: '{{#sys.query#}}',
+          query_prompt_template: '{{#sys.query#}}\n\n{{#sys.files#}}',
         },
         selected: true,
       },

web/app/components/workflow/nodes/_base/components/memory-config.tsx

 
 const MEMORY_DEFAULT: Memory = {
   window: { enabled: false, size: WINDOW_SIZE_DEFAULT },
-  query_prompt_template: '{{#sys.query#}}',
+  query_prompt_template: '{{#sys.query#}}\n\n{{#sys.files#}}',
 }
 
 const MemoryConfig: FC<Props> = ({