Function clock_report_provider_id 

pub fn clock_report_provider_id(view: BufferId) -> u64

The ProviderId a view’s clock report registers under.

Derived from the view’s BufferId exactly as the multibuffer’s own two providers are, so two open scan views each get their own report and re-activating a mode replaces its rows rather than doubling them (register_virtual_row_provider dedups by id — the OA.14 spike’s finding).