[FIX] Unarchive permission not honored

[reinaldonetof]

Proposed changes

Implemented to show an alert error when archive/unarchives a room.
Disable the ARCHIVE/UNARCHIVE button due to the role permission

Issue(s)

#3118
I archive the channel, the "Unarchive" button appears, but it does not work

How to test or reproduce

• Go to a Room (channel, dm, discussion)
• Click on Title
• At Actions screen, click on title
• And needs to appear the Edit button, then click on it
• Go to Room Info Edit
• Archive the room
• Unarchive the room
• If the button for Archive/Unarchive is blocked, it's because the user doesn't have permission to do that thing

Screenshots

Before	After

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

Closes #3118

[diegolmello]

Made a few changes and now lgtm.
@reinaldonetof Can you add a proper test plan and update the description?

[CLAassistant]

All committers have signed the CLA.