* AAP-65883: Refactor clear_setting_cache to use DAB shared utility
Delegate cache invalidation logic to ansible_base.lib.cache.tasks.clear_cache,
passing AWX-specific dependent key resolution (settings_registry) and
post-invalidation hook (LOG_AGGREGATOR_LEVEL reconfiguration) as callbacks.
Requires: ansible/django-ansible-base AAP-65883/dab-cache-invalidation-job
Assisted-by: Claude Code / Opus 4.6 (Anthropic)
* AAP-65883: Extract helper functions to module level
Move _resolve_setting_dependents and _post_setting_invalidation out of
clear_setting_cache for better stack traces and independent testability
per review feedback (John Westcott).
Assisted-by: Claude Code / Opus 4.6 (Anthropic)
