Hack around source location lookup failure

[ekohl]

While extracting plugins I found this started to fail. With the patch applied I get this output:

$ bundle exec rake 'gettext:find[foreman-tasks]'
2024-09-19T12:16:13 [I|app|] Rails cache backend: File
2024-09-19T12:16:13 [W|app|] You are trying to replace import_subnets from . Adding allowed actions from plugin permissions to the existing one.
2024-09-19T12:16:13 [D|app|] Registering 15 assets for plugin foreman-tasks precompilation
Unable to find plugin for action 'Actions::CheckLongRunningTasks'
Unable to find plugin for action 'Actions::ActionWithSubPlans'
Unable to find plugin for action 'Actions::Foreman::Puppetclass::Import'
Unable to find plugin for action 'Actions::Foreman::Host::ImportFacts'
Unable to find plugin for action 'Actions::DeliverLongRunningTasksNotification'

That is all of the actions. When I used pry I could see that sometimes @engine was nil. Other times lookup actually failed:

[1] pry(main)> action
=> Actions::Foreman::Puppetclass::Import
[4] pry(main)> Object.const_source_location(action.to_s)
=> [false, 0]

Looking at the documentation Ruby is never supposed to return false.

I suspect this is because of Zeitwerk changes, but I have no idea why.