[FIX] Wrong message when room is closed by the Guest

[reinaldonetof]

Proposed changes

Move the agent to the Room List View and don't show the wrong/unnecessary message

Issue(s)

On Mobile app side, a wrong/unnecessary message is threw

How to test or reproduce

1 - Activate Omnicahnnel -> https://docs.rocket.chat/guides/omnichannel-guides/omnichannel-admins-guide
2 - Start a new chat through Livechat
3 - Take the Chat in the queue
4 - On Livechat, click on Options button
5 - Click Finish this chat button
6 - On Mobile app side, a wrong/unnecessary message is threw

Screenshots

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• Improvement (non-breaking change which improves a current function)
• New feature (non-breaking change which adds functionality)
• Documentation update (if none of the other choices apply)

Checklist

• I have read the CONTRIBUTING doc
• I have signed the CLA
• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works (if applicable)
• I have added necessary documentation (if applicable)
• Any dependent changes have been merged and published in downstream modules

Further comments

[gerzonc]

LGTM