The manual recipe form now enables Save only once method and minutes are
set, as POST /api/v1/dinners/{id}/ground requires, and always sends both.
useRegulars watches the Regulars changes in flight with useIsMutating, so
the grounding refresh pauses while an edit or a recipe fix is being saved,
not only while an add or favorite changes the list, and resumes after.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>