[Enhancement] SQL: Chats, Count of idle chats ended by Bürokratt

[JaanikaTalvistu]

MODULE: Analytics
SCOPE: Chats
SQL: DSL/Resql/analytics/POST/chat-count-only-chatbot.sql

Acceptance Criteria

Logic must be similar to the overview tab SQL (DSL/Resql/overview-total-chats-no-csa.sq), linked to #623

• SQL calls out created chats between specified time (as-is).
• Counted chats need to have an ENDED status (as-is).
• Only unique chats are counted (as-is).
• Only exclude all advisors from the SQL. Has to match the overview logic, please remove 'taken-over' event.