fix: add custom disallowed elements to Markdown component and restore the default disallowed elements (#15057)

web/app/components/base/markdown.tsx

   }
 }
 
-export function Markdown(props: { content: string; className?: string }) {
+export function Markdown(props: { content: string; className?: string; customDisallowedElements?: string[] }) {
   const latexContent = flow([
     preprocessThinkTag,
     preprocessLaTeX,
             }
           },
         ]}
-        disallowedElements={['iframe', 'head', 'html', 'meta', 'link', 'style', 'body', 'input']}
+        disallowedElements={['iframe', 'head', 'html', 'meta', 'link', 'style', 'body', ...(props.customDisallowedElements || [])]}
         components={{
           code: CodeBlock,
           img: Img,

web/app/components/datasets/documents/detail/completed/common/chunk-content.tsx

       <Markdown
         className='h-full w-full !text-text-secondary'
         content={question}
+        customDisallowedElements={['input']}
       />
     )
   }

web/app/components/datasets/documents/detail/completed/segment-card/chunk-content.tsx

       className,
     )}
     content={sign_content || content || ''}
+    customDisallowedElements={['input']}
   />
 }
 

web/app/components/datasets/hit-testing/components/chunk-detail-modal.tsx

           <Markdown
             className={cn('!mt-2 !text-text-secondary', heighClassName)}
             content={sign_content || content}
+            customDisallowedElements={['input']}
           />
           {!isParentChildRetrieval && keywords && keywords.length > 0 && (
             <div className='mt-6'>

web/app/components/datasets/hit-testing/components/result-item.tsx

 
       {/* Main */}
       <div className='mt-1 px-3'>
-        <Markdown className='line-clamp-2' content={sign_content || content} />
+        <Markdown
+          className='line-clamp-2'
+          content={sign_content || content}
+          customDisallowedElements={['input']}
+        />
         {isParentChildRetrieval && (
           <div className='mt-1'>
             <div