fix: chat.update allows to set message as empty string

[KevLehman]

Proposed changes (including videos or screenshots)

chat.update allowed to pass an empty text field. This caused the UI to render an empty message.

Now, this is removed and API will throw an error. On UI, we don't allow this and we ask the user if the message should be deleted instead.

Issue(s)

https://rocketchat.atlassian.net/browse/CORE-603

Steps to test or reproduce

Further comments

[dionisio-bot]

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[changeset-bot]

🦋 Changeset detected

Latest commit: b235e66

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 35 packages

Name	Type
@rocket.chat/meteor	Patch
@rocket.chat/rest-typings	Patch
@rocket.chat/api-client	Patch
@rocket.chat/core-services	Patch
@rocket.chat/ddp-client	Patch
@rocket.chat/models	Patch
@rocket.chat/ui-contexts	Patch
@rocket.chat/account-service	Patch
@rocket.chat/authorization-service	Patch
@rocket.chat/ddp-streamer	Patch
@rocket.chat/stream-hub-service	Patch
@rocket.chat/omnichannel-services	Patch
@rocket.chat/presence	Patch
rocketchat-services	Patch
@rocket.chat/omnichannel-transcript	Patch
@rocket.chat/presence-service	Patch
@rocket.chat/queue-worker	Patch
@rocket.chat/network-broker	Patch
@rocket.chat/livechat	Patch
@rocket.chat/cron	Patch
@rocket.chat/instance-status	Patch
@rocket.chat/uikit-playground	Patch
@rocket.chat/fuselage-ui-kit	Patch
@rocket.chat/gazzodown	Patch
@rocket.chat/ui-avatar	Patch
@rocket.chat/ui-client	Patch
@rocket.chat/ui-video-conf	Patch
@rocket.chat/ui-voip	Patch
@rocket.chat/web-ui-registration	Patch
@rocket.chat/core-typings	Patch
@rocket.chat/apps	Patch
@rocket.chat/freeswitch	Patch
@rocket.chat/model-typings	Patch
@rocket.chat/license	Patch
@rocket.chat/pdf-worker	Patch

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[github-actions]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.13%. Comparing base (9af2774) to head (b235e66).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop   #34934   +/-   ##
========================================
  Coverage    59.13%   59.13%           
========================================
  Files         2819     2819           
  Lines        67957    67957           
  Branches     15138    15138           
========================================
  Hits         40188    40188           
  Misses       24935    24935           
  Partials      2834     2834           

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