chore: Improve Transcript service call chain

[KevLehman]

Proposed changes (including videos or screenshots)

Basically, previous call was meteor => transcript => queue => transcript. The first call from meteor to the transcript service could be omitted if we do the logic on meteor.

With the new changes, meteor is the one that decides if we call transcript directly (on sync calls, for tests) or if we queue the item (for regular work).

Changes should work and improve a bit whether you use microservices or not.

Issue(s)

https://rocketchat.atlassian.net/browse/CORE-920

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 59.19%. Comparing base (f323946) to head (bc5c621).
Report is 1 commits behind head on develop.

Additional details and impacted files

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Flag	Coverage Δ
unit	75.01% <100.00%> (+0.02%)	⬆️

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[MartinSchoeler]

Symbolic OC review :)