fix(admin): present store credit recharge in a side drawer

projects/xiaoshu-admin/src/app/components/store-credit-account.component.html

@@ -14,7 +14,7 @@
  }
 </section>}
 @if(open()){
-<div class="backdrop" (click)="close()"></div><section class="credit-dialog" role="dialog" aria-modal="true" aria-label="门店额度充值">
+<div class="backdrop" (click)="close()"></div><section class="credit-dialog credit-drawer" role="dialog" aria-modal="true" aria-label="门店额度充值">
 <header><div><h2>{{direction==='reverse'?'纠正总部入账':'门店充值额度'}}</h2><span>{{data()?.storeName||'正在读取门店…'}} · ID {{data()?.storeId||'—'}}</span></div><button type="button" (click)="close()" [disabled]="busy()">关闭</button></header>
 @if(error()){<p class="error" role="alert">{{error()}}</p>}
 @if(loading()){<p>正在读取账户…</p>}