refactor: update user reference to use nick_name in index.vue and shared_tool.py

Author: liuruibin

ui/src/views/shared/knowledge-shared/index.vue

@@ -157,7 +157,7 @@
                   </template>
                   <template #subTitle>
                     <el-text class="color-secondary lighter" size="small">
-                      {{ $t('common.creator') }}: {{ item.username }}
+                      {{ $t('common.creator') }}: {{ item.nick_name }}
                     </el-text>
                   </template>
                 </CardBox>
@@ -182,7 +182,7 @@
                   </template>
                   <template #subTitle>
                     <el-text class="color-secondary" size="small">
-                      {{ $t('common.creator') }}: {{ item.username }}
+                      {{ $t('common.creator') }}: {{ item.nick_name }}
                     </el-text>
                   </template>
 

ui/src/views/shared/tool-shared/index.vue

@@ -69,7 +69,7 @@
                 </template>
                 <template #subTitle>
                   <el-text class="color-secondary lighter" size="small">
-                    {{ $t('common.creator') }}: {{ item.username }}
+                    {{ $t('common.creator') }}: {{ item.nick_name }}
                   </el-text>
                 </template>
               </CardBox>
@@ -92,7 +92,7 @@
                 </template>
                 <template #subTitle>
                   <el-text class="color-secondary lighter" size="small">
-                    {{ $t('common.creator') }}: {{ item.username }}
+                    {{ $t('common.creator') }}: {{ item.nick_name }}
                   </el-text>
                 </template>