fix: slack importer not importing messages correctly

[dionisio-bot]

Backport of #40053

[changeset-bot]

🦋 Changeset detected

Latest commit: f0d5412

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

This PR includes changesets to release 41 packages

Name	Type
@rocket.chat/meteor	Patch
@rocket.chat/core-typings	Patch
@rocket.chat/rest-typings	Patch
@rocket.chat/uikit-playground	Patch
@rocket.chat/api-client	Patch
@rocket.chat/apps	Patch
@rocket.chat/core-services	Patch
@rocket.chat/cron	Patch
@rocket.chat/ddp-client	Patch
@rocket.chat/fuselage-ui-kit	Patch
@rocket.chat/gazzodown	Patch
@rocket.chat/http-router	Patch
@rocket.chat/livechat	Patch
@rocket.chat/model-typings	Patch
@rocket.chat/ui-avatar	Patch
@rocket.chat/ui-client	Patch
@rocket.chat/ui-contexts	Patch
@rocket.chat/ui-voip	Patch
@rocket.chat/web-ui-registration	Patch
@rocket.chat/account-service	Patch
@rocket.chat/authorization-service	Patch
@rocket.chat/ddp-streamer	Patch
@rocket.chat/omnichannel-transcript	Patch
@rocket.chat/presence-service	Patch
@rocket.chat/queue-worker	Patch
@rocket.chat/abac	Patch
@rocket.chat/federation-matrix	Patch
@rocket.chat/license	Patch
@rocket.chat/media-calls	Patch
@rocket.chat/omnichannel-services	Patch
@rocket.chat/pdf-worker	Patch
@rocket.chat/presence	Patch
rocketchat-services	Patch
@rocket.chat/models	Patch
@rocket.chat/network-broker	Patch
@rocket.chat/omni-core-ee	Patch
@rocket.chat/mock-providers	Patch
@rocket.chat/ui-video-conf	Patch
@rocket.chat/instance-status	Patch
@rocket.chat/omni-core	Patch
@rocket.chat/server-fetch	Patch

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[dionisio-bot]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (release-8.3.3@e7bf767). Learn more about missing BASE report.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-8.3.3   #40415   +/-   ##
================================================
  Coverage                 ?   70.54%           
================================================
  Files                    ?     3264           
  Lines                    ?   116110           
  Branches                 ?    21100           
================================================
  Hits                     ?    81907           
  Misses                   ?    32138           
  Partials                 ?     2065           

Flag	Coverage Δ
e2e	60.64% <ø> (?)
e2e-api	48.20% <ø> (?)
unit	70.97% <100.00%> (?)

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