fix(art-header-bar): 更新用户和教师头像的图片路径

将用户头像和教师头像的图片路径更新为新的文件名，以保持命名一致性

src/components/core/layouts/art-header-bar/index.vue

@@ -153,8 +153,8 @@
   import { themeAnimation } from '@/utils/theme/animation'
   import { useCommon } from '@/composables/useCommon'
   import { useHeaderBar } from '@/composables/useHeaderBar'
-  import UserAvatarImage from '@imgs/user/user.avatar.png'
-  import TeacherAvatarImage from '@imgs/user/teacher.avatar.png'
+  import UserAvatarImage from '@imgs/user/avatar.user.png'
+  import TeacherAvatarImage from '@imgs/user/avatar.teacher.png'
 
   defineOptions({ name: 'ArtHeaderBar' })