fix: Optimize dialogue style (#2849)

Author: wangdan-fit2cloud

ui/src/components/ai-chat/component/operation-button/ChatOperationButton.vue

@@ -1,7 +1,7 @@
 <template>
   <div class="chat-operation-button flex-between">
     <el-text type="info">
-      <span class="ml-4">{{ datetimeFormat(data.create_time) }}</span>
+      <span class="ml-4" v-if="data.create_time">{{ datetimeFormat(data.create_time) }}</span>
     </el-text>
 
     <div>

ui/src/components/ai-chat/index.scss

@@ -39,7 +39,7 @@
 
 @media only screen and (max-width: 768px) {
   .ai-chat {
-    height: calc(100% - 100px);
+    height: calc(100% - 106px) !important;
   }
 }
 .chat-mobile {

ui/src/components/ai-chat/index.vue

@@ -3,7 +3,10 @@
     ref="aiChatRef"
     class="ai-chat"
     :class="type"
-    :style="{ height: firsUserInput ? '100%' : undefined }"
+    :style="{
+      height: firsUserInput ? '100%' : undefined,
+      paddingBottom: applicationDetails.disclaimer ? '20px' : 0
+    }"
   >
     <div
       v-show="showUserInputContent"