safe_outputs: created_issue_* outputs missing because emitter is never called

[strawgate]

Problem

Process Safe Outputs can successfully create an issue, but does not emit:

• created_issue_number
• created_issue_url

This breaks workflows that gate downstream jobs on needs.<job>.outputs.created_issue_number.

Root cause

actions/setup/js/safe_outputs_action_outputs.cjs contains logic to emit created_issue_*, but actions/setup/js/safe_output_handler_manager.cjs never calls it.

Current manager path sets outputs like temporary_id_map / processed_count and error channels, but omits created_issue_* emission.

Expected behavior

If at least one create_issue succeeds during Process Safe Outputs, always set:

• created_issue_number = first successful issue number
• created_issue_url = first successful issue URL

Suggested fix

In safe_output_handler_manager.cjs, import and call:

• emitSafeOutputActionOutputs(processingResult)
  after message processing completes.

Acceptance criteria

• Successful create_issue always results in created_issue_number and created_issue_url step outputs.
• safe_outputs job outputs expose these values for workflow callers.
• Add regression coverage in manager tests for output emission.