feat: Livechat department removed/disabled events for apps

[KevLehman]

Proposed changes (including videos or screenshots)

Issue(s)

https://rocketchat.atlassian.net/browse/CORE-243

Steps to test or reproduce

Further comments

[dionisio-bot]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.43%. Comparing base (71fc001) to head (8a83708).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop   #35280   +/-   ##
========================================
  Coverage    59.43%   59.43%           
========================================
  Files         2829     2829           
  Lines        68323    68323           
  Branches     15131    15131           
========================================
  Hits         40611    40611           
  Misses       25054    25054           
  Partials      2658     2658           

Flag	Coverage Δ
unit	75.53% <ø> (ø)

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Latest commit: 8a83708

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