fix: keep mobile filter resets intentional

vehicle-data-platform/apps/web/src/v2/pages/AlertsPage.tsx

@@ -200,6 +200,7 @@ function EventWorkspace({ filters, draft, setDraft, setFilters, rules, unread, e
     setFiltersCollapsed(true);
   };
   const submit = (e: FormEvent) => { e.preventDefault(); applyDraft(); };
+  const resetMobileDraft = () => setDraft(EMPTY_FILTERS);
   const resetFilters = () => {
     setDraft(EMPTY_FILTERS);
     setFilters(EMPTY_FILTERS);
@@ -256,7 +257,7 @@ function EventWorkspace({ filters, draft, setDraft, setFilters, rules, unread, e
         title="筛选告警事件"
         description="车辆、状态、规则与时间范围"
         onCancel={() => setFiltersCollapsed(true)}
-        secondaryAction={{ label: '重置条件', onClick: resetFilters }}
+        secondaryAction={{ label: '重置条件', onClick: resetMobileDraft }}
         primaryAction={{ label: '应用并查询', onClick: applyDraft }}
       >
         <form className="v2-alert-mobile-filter-form" onSubmit={submit}>