enhance(client): メニュー整理

Resolve #6389
Fix #8035

packages/client/src/widgets/activity.vue

@@ -1,6 +1,6 @@
 <template>
 <MkContainer :show-header="widgetProps.showHeader" :naked="widgetProps.transparent" class="mkw-activity">
-	<template #header><i class="fas fa-chart-bar"></i>{{ $ts._widgets.activity }}</template>
+	<template #header><i class="fas fa-chart-simple"></i>{{ $ts._widgets.activity }}</template>
 	<template #func><button class="_button" @click="toggleView()"><i class="fas fa-sort"></i></button></template>
 
 	<div>