Revert "feat: add BaseUserAvatar and unify avatar usage"

This reverts commit efbb83924b.

frontend_nuxt/components/SearchPersonDropdown.vue

@@ -24,13 +24,10 @@
       </template>
       <template #option="{ option }">
         <div class="search-option-item">
-          <BaseUserAvatar
+          <BaseImage
+            :src="option.avatar || '/default-avatar.svg'"
             class="avatar"
-            :user-id="option.id"
-            :avatar="option.avatar"
-            :username="option.username"
-            :width="32"
-            :link="false"
+            @error="handleAvatarError"
           />
           <div class="result-body">
             <div class="result-main" v-html="highlight(option.username)"></div>
@@ -90,6 +87,10 @@ const highlight = (text) => {
   return text.replace(reg, (m) => `<span class="highlight">${m}</span>`)
 }
 
+const handleAvatarError = (e) => {
+  e.target.src = '/default-avatar.svg'
+}
+
 watch(selected, async (val) => {
   if (!val) return
   const user = results.value.find((u) => u.id === val)
@@ -177,6 +178,8 @@ defineExpose({
 .avatar {
   width: 32px;
   height: 32px;
+  border-radius: 50%;
+  object-fit: cover;
 }
 
 .result-body {