fix: 修复新版本插件市场出现插件显示为空白的 bug；纠正已安装插件卡片的排版，统一大小 (#5309)

* fix(ExtensionCard): 解决插件卡片大小不统一的问题

* fix(MarketPluginCard): 解决插件市场不加载插件的问题 （#5303）

Author: SXP-Simon

dashboard/src/components/extension/MarketPluginCard.vue

@@ -27,6 +27,10 @@ const normalizePlatformList = (platforms) => {
   return platforms.filter((item) => typeof item === "string");
 };
 
+const platformDisplayList = computed(() =>
+  normalizePlatformList(props.plugin?.support_platforms),
+);
+
 const handleInstall = (plugin) => {
   emit("install", plugin);
 };

dashboard/src/components/shared/ExtensionCard.vue

@@ -108,8 +108,9 @@ const viewChangelog = () => {
 
 <template>
   <v-card
-    class="mx-auto d-flex flex-column"
+    class="mx-auto d-flex flex-column h-100"
     elevation="0"
+    height="100%"
     :style="{
       position: 'relative',
       backgroundColor: