fix: wrong condition in h2 warning alert (#6526)

#### What type of PR is this?

/area ui
/kind bug
/milestone 2.19.0

#### What this PR does / why we need it:

修复 H2 数据库提示判断有误的问题。

#### Does this PR introduce a user-facing change?

```release-note
None
```

ui/src/components/alerts/H2WarningAlert.vue

@@ -17,7 +17,7 @@ const { data: info } = useQuery<Info>({
 </script>
 <template>
   <VAlert
-    v-if="!info?.database.name.startsWith('H2')"
+    v-if="info?.database.name.startsWith('H2')"
     class="mt-3"
     type="warning"
     :title="$t('core.components.h2_warning_alert.title')"