style: align search bar with title horizontally

- Remove justify-between to place the search bar and filter controls immediately next to the registry title and count description.

adminfront/src/features/tenants/routes/TenantListPage.tsx

@@ -474,7 +474,7 @@ function TenantListPage() {
       </header>
 
       <Card className="bg-[var(--color-panel)] flex-1 flex flex-col min-h-0 overflow-hidden">
-        <CardHeader className="flex flex-wrap items-end justify-between gap-4 flex-shrink-0">
+        <CardHeader className="flex flex-wrap items-end gap-8 flex-shrink-0">
           <div>
             <CardTitle>
               {t("ui.admin.tenants.registry.title", "Tenant Registry")}