Block Action Scheduler too

[szepeviktor]

Added action to modify Action Scheduler behavior by removing the default runner and preventing async requests.

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Summary by cubic

Blocks background job execution by disabling ActionScheduler runners on the source server. Removes the default queue runner from action_scheduler_run_queue, forces action_scheduler_allow_async_request_runner to false, and renames the MU plugin to Migration source server guard.

^{Written for commit 124d471. Summary will update on new commits.}

[Copilot]

Pull request overview

This PR further hardens the “migration” MU plugin by blocking Action Scheduler background execution, complementing the existing blocks for WP-Cron, outbound HTTP, and email sending.

Changes:

• Adds an init hook that attempts to remove the default Action Scheduler queue runner.
• Disables the async request runner via action_scheduler_allow_async_request_runner filter.

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[cubic-dev-ai]

No issues found across 1 file

_{Re-trigger cubic}