Fix memory config: user prompt text box (#12229)

### What problem does this PR solve?

As title

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

Signed-off-by: Jin Hai <haijin.chn@gmail.com>

web/src/pages/memory/memory-setting/advanced-settings-form.tsx

@@ -146,7 +146,7 @@ export const AdvancedSettingsForm = () => {
             field={{
               name: 'user_prompt',
               label: t('memory.config.userPrompt'),
-              type: FormFieldType.Text,
+              type: FormFieldType.Textarea,
               horizontal: true,
               placeholder: t('memory.config.userPromptPlaceholder'),
               required: false,

web/src/pages/memory/memory-setting/index.tsx

@@ -74,7 +74,7 @@ export default function MemoryMessage() {
       <div className="flex gap-14 flex-1 min-h-0">
         <Form {...form}>
           <form onSubmit={form.handleSubmit(() => {})} className="space-y-6 ">
-            <div className="w-[768px] h-[calc(100vh-300px)] pr-1 overflow-y-auto scrollbar-auto">
+            <div className="w-[768px] h-[calc(100vh-300px)] pr-1 overflow-y-auto scrollbar-auto pb-4">
               <MainContainer className="text-text-secondary !space-y-10">
                 <div className="text-base font-medium text-text-primary">
                   {t('knowledgeConfiguration.baseInfo')}