perf(frontend): use css-native implementation for spacer rather than vue component

packages/frontend/src/pages/admin/database.vue

@@ -5,14 +5,14 @@ SPDX-License-Identifier: AGPL-3.0-only
 
 <template>
 <PageWithHeader :actions="headerActions" :tabs="headerTabs">
-	<MkSpacer :contentMax="800" :marginMin="16" :marginMax="32">
+	<div class="_spacer" style="--MI_SPACER-w: 800px; --MI_SPACER-min: 16px; --MI_SPACER-max: 32px;">
 		<FormSuspense v-slot="{ result: database }" :p="databasePromiseFactory">
 			<MkKeyValue v-for="table in database" :key="table[0]" oneline style="margin: 1em 0;">
 				<template #key>{{ table[0] }}</template>
 				<template #value>{{ bytes(table[1].size) }} ({{ number(table[1].count) }} recs)</template>
 			</MkKeyValue>
 		</FormSuspense>
-	</MkSpacer>
+	</div>
 </PageWithHeader>
 </template>