Update Simplified Chinese translations (#6306)

* i18n: (zh-CN) Add translations of #6251

* i18n: (zh-CN) Improve translations for #6291

* Fix en.json

* i18n: (zh-CN) Update translations for #6303

* i18n: (zh-CN) Add translations of #6273
with minor adjustment

* Minor fix

* Minor fix

app/javascript/mastodon/locales/en.json

@@ -174,7 +174,8 @@
   "onboarding.page_four.home": "The home timeline shows posts from people you follow.",
   "onboarding.page_four.notifications": "The notifications column shows when someone interacts with you.",
   "onboarding.page_one.federation": "Mastodon is a network of independent servers joining up to make one larger social network. We call these servers instances.",
-  "onboarding.page_one.handle": "Your full handle is {handle}. This is what you would tell your friends to search for.",
+  "onboarding.page_one.full_handle": "Your full handle",
+  "onboarding.page_one.handle_hint": "This is what you would tell your friends to search for.",
   "onboarding.page_one.welcome": "Welcome to Mastodon!",
   "onboarding.page_six.admin": "Your instance's admin is {admin}.",
   "onboarding.page_six.almost_done": "Almost done...",

app/javascript/mastodon/locales/zh-CN.json

@@ -139,6 +139,7 @@
   "loading_indicator.label": "加载中……",
   "media_gallery.toggle_visible": "切换显示/隐藏",
   "missing_indicator.label": "找不到内容",
+  "missing_indicator.sublabel": "无法找到此资源",
   "mute_modal.hide_notifications": "同时隐藏来自这个用户的通知",
   "navigation_bar.blocks": "被屏蔽的用户",
   "navigation_bar.community_timeline": "本站时间轴",
@@ -174,7 +175,8 @@
   "onboarding.page_four.home": "你的“主页”时间轴上显示的是你的关注对象所发布的嘟文。",
   "onboarding.page_four.notifications": "如果有人与你互动了，他们就会出现在“通知”栏中哦～",
   "onboarding.page_one.federation": "Mastodon 是由一系列独立的服务器共同打造的强大的社交网络，我们将这些各自独立而又相互连接的服务器叫做“实例”。",
-  "onboarding.page_one.handle": "你是在 {domain} 上注册的，所以你的完整用户地址是 {handle}。",
+  "onboarding.page_one.full_handle": "你的完整用户地址",
+  "onboarding.page_one.handle_hint": "你的朋友们需要这个才能通过搜索功能找到你。",
   "onboarding.page_one.welcome": "欢迎来到 Mastodon！",
   "onboarding.page_six.admin": "{admin} 是你所在服务器实例的管理员。",
   "onboarding.page_six.almost_done": "差不多了……",
@@ -197,6 +199,8 @@
   "privacy.public.short": "公开",
   "privacy.unlisted.long": "所有人可见，但不会出现在公共时间轴上",
   "privacy.unlisted.short": "不公开",
+  "regeneration_indicator.label": "加载中……",
+  "regeneration_indicator.sublabel": "你的主页时间轴正在准备中！",
   "relative_time.days": "{number}天",
   "relative_time.hours": "{number}时",
   "relative_time.just_now": "刚刚",