Previously, plugin-cloud would only set up job auto-running if a job configuration was present in the custom config at initialization time.
However, some jobs - such as the scheduled publish job which is added during sanitization - are added after plugin-cloud has initialized. This means relying solely on the initial state of the job config is insufficient for determining whether to enable auto-running.
This PR removes that check and ensures auto-running is always initialized, allowing later-added jobs to run as expected.
## Weakening type
This PR also weakens to `config.jobs.tasks` type and makes that property optional. It's totally permissible to only have workflows that define inline tasks, and to not have any static tasks defined in `config.jobs.tasks`. Thus it makes no sense to make that property required.
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