Avoid autoload issue such as 'Mail::Parsers::AddressStruct'
What does this MR do?
It eager-loads the Mail gem when we're in a Sidekiq context.
Are there points in the code the reviewer needs to double check?
This is mostly a shot in the dark but at least it shouldn't break anything.
Why was this MR needed?
Because of #18810 (closed).
What are the relevant issue numbers?
Fixes #18810 (closed).
Does this MR meet the acceptance criteria?
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No CHANGELOG since it's an intermittent issue (it depends on the loading order so the job usually succeeds on subsequent retries) -
Tests -
All builds are passing
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Conform by the style guides -
Branch has no merge conflicts with master
(if you do - rebase it please) -
Squashed related commits together