fix: 账号管理列表头像显示问题

Web/src/views/system/user/index.vue

@@ -36,7 +36,7 @@
 						<el-table-column prop="nickName" label="昵称" width="120" show-overflow-tooltip />
 						<el-table-column label="头像" width="80" align="center" show-overflow-tooltip>
 							<template #default="scope">
-								<el-avatar src="" size="small">{{ scope.row.nickName?.slice(0, 1) }} </el-avatar>
+								<el-avatar :src="scope.row.avatar" size="small">{{ scope.row.nickName?.slice(0, 1) ?? scope.row.realName?.slice(0, 1) }} </el-avatar>
 							</template>
 						</el-table-column>
 						<el-table-column prop="realName" label="姓名" width="120" show-overflow-tooltip />