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

packages/frontend/src/components/global/MkSpacer.vue

@@ -1,58 +0,0 @@
-<!--
-SPDX-FileCopyrightText: syuilo and misskey-project
-SPDX-License-Identifier: AGPL-3.0-only
--->
-
-<template>
-<div :class="[$style.root, { [$style.rootMin]: forceSpacerMin }]">
-	<div :class="$style.content">
-		<slot></slot>
-	</div>
-</div>
-</template>
-
-<script lang="ts" setup>
-import { inject } from 'vue';
-import { deviceKind } from '@/utility/device-kind.js';
-import { DI } from '@/di.js';
-
-const props = withDefaults(defineProps<{
-	contentMax?: number | null;
-	marginMin?: number;
-	marginMax?: number;
-}>(), {
-	contentMax: null,
-	marginMin: 12,
-	marginMax: 24,
-});
-
-const forceSpacerMin = inject(DI.forceSpacerMin, false) || deviceKind === 'smartphone';
-</script>
-
-<style lang="scss" module>
-.root {
-	box-sizing: border-box;
-	width: 100%;
-}
-.rootMin {
-	padding: v-bind('props.marginMin + "px"') !important;
-}
-
-.content {
-	margin: 0 auto;
-	max-width: v-bind('props.contentMax + "px"');
-	container-type: inline-size;
-}
-
-@container (max-width: 450px) {
-	.root {
-		padding: v-bind('props.marginMin + "px"');
-	}
-}
-
-@container (min-width: 451px) {
-	.root {
-		padding: v-bind('props.marginMax + "px"');
-	}
-}
-</style>