feat: make input size bigger in start (#3340)

web/app/components/app/configuration/config-var/config-modal/index.tsx

 import { ChangeType, InputVarType } from '@/app/components/workflow/types'
 
 const TEXT_MAX_LENGTH = 256
-const PARAGRAPH_MAX_LENGTH = 1024
+const PARAGRAPH_MAX_LENGTH = 1032 * 32
 
 export type IConfigModalProps = {
   isCreate?: boolean