HH-551: localize activity messages (#132)

* fix(HH-551): localize activity messages

* fix(HH-551): handle null activity content

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Co-authored-by: Rogee <rogee@ipao.vip>

frontend/app/javascript/dashboard/i18n/locale/en/conversation.json

@@ -2,6 +2,15 @@
   "CONVERSATION": {
     "SELECT_A_CONVERSATION": "Please select a conversation from left pane",
     "CSAT_REPLY_MESSAGE": "Please rate the conversation",
+    "ACTIVITY": {
+      "ANONYMOUS_VISITOR": "Anonymous visitor",
+      "RESOLVED_BY": "Conversation was resolved by {name}",
+      "BOT_WEBHOOK_FAILURE": "Conversation was reopened because the agent bot webhook failed",
+      "CSAT_RESTRICTED": "CSAT survey was not sent due to outgoing message restrictions",
+      "LINEAR_CREATED": "Linear issue {issueId} was created by {name}",
+      "LINEAR_LINKED": "Linear issue {issueId} was linked by {name}",
+      "LINEAR_UNLINKED": "Linear issue {issueId} was unlinked by {name}"
+    },
     "404": "Sorry, we cannot find the conversation. Please try again",
     "SWITCH_VIEW_LAYOUT": "Switch the layout",
     "DASHBOARD_APP_TAB_MESSAGES": "Messages",

frontend/app/javascript/dashboard/i18n/locale/zh_CN/conversation.json

@@ -2,6 +2,15 @@
   "CONVERSATION": {
     "SELECT_A_CONVERSATION": "请从左侧窗格选择一个对话",
     "CSAT_REPLY_MESSAGE": "请为会话评分",
+    "ACTIVITY": {
+      "ANONYMOUS_VISITOR": "匿名访客",
+      "RESOLVED_BY": "会话已由{name}解决",
+      "BOT_WEBHOOK_FAILURE": "由于客服机器人 Webhook 失败，会话已重新打开",
+      "CSAT_RESTRICTED": "由于发送消息受限，未发送 CSAT 调查",
+      "LINEAR_CREATED": "Linear 问题 {issueId} 已由 {name} 创建",
+      "LINEAR_LINKED": "Linear 问题 {issueId} 已由 {name} 关联",
+      "LINEAR_UNLINKED": "Linear 问题 {issueId} 已由 {name} 取消关联"
+    },
     "404": "抱歉，我们找不到对话。请重试",
     "SWITCH_VIEW_LAYOUT": "切换布局",
     "DASHBOARD_APP_TAB_MESSAGES": "消息",