FIX: Move chat integration problem check message to correct locale key (#201)

As part of enhancing problem checks and admin notices, we standardized the location of the problem check messages' locale keys. However, we overlooked this one in the plugin, resulting in a missing translation on the dashboard.

This PR puts the locale key in the place expected by the admin notice system.

app/services/problem_check/channel_errors.rb

@@ -18,8 +18,4 @@ class ProblemCheck::ChannelErrors < ProblemCheck
         ::DiscourseChatIntegration::Provider.is_enabled(channel.provider)
     end
   end
-
-  def translation_key
-    "chat_integration.admin_error"
-  end
 end

config/locales/server.en.yml

@@ -111,6 +111,10 @@ en:
     chat_integration_google_enabled: "Enable the 'Google Chat' chat integration provider"
     chat_integration_google_excerpt_length: "Google Chat post excerpt length"
 
+  dashboard:
+    problem:
+      channel_errors: "Some chat integration channels have errors. Visit <a href='%{base_path}/admin/plugins/chat-integration'>the chat integration section</a> to find out more."
+
   discourse_automation:
     scriptables:
       send_slack_message:
@@ -124,8 +128,6 @@ en:
     group_mention_template: "mentions of: @%{name}"
     group_message_template: "messages to: @%{name}"
 
-    admin_error: "Some chat integration channels have errors. Visit <a href='%{base_path}/admin/plugins/chat-integration'>the chat integration section</a> to find out more."
-
     provider:
 
       #######################################