Issue #3586287: No public API for building scope subscription forms; consumers must depend on the internal scope manager.

Description

See No public API for building scope subscription f... (#3586287 - closed) • Unassigned.

Testing instructions

Joshua tested with ai_empathy contrib module.

Checklist

• I have updated the MR title to use format: Issue #1234: My issue title.
• I have updated the MR description to include: Closes #1234
• I have performed a self-review of my own code
• I have added or updated tests, or explained in the description why this change is not covered by tests
• I have updated documentation for any new or changed functionality
• This MR contains no breaking API or hook changes, or they are explicitly documented in the description

Other:

• (Joshua tested) I have written testing instructions and verified them locally
• (clear caches) I have noted any required post-merge steps (config imports, cache rebuilds, manual changes)

AI Compliance

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Closes #3586287 (closed)