Prevent concurrent rendering issues with People list and Audit modal

Two fixes:<br>* 1: add a pre-run of options.fn() for deferred Mustache Helpers (using, with_mapping, etc.) to avoid the occasional glitchy attribute setting.<br>* 2: Render the people widget on demand only. Unlike other related object widgets, People uses a ListView instead of a TreeView and didn't have the delayed rendering enhancements that @danring created.  ListView now (partially) supports this paradigm.<br><br>Ref: p/69248780 b/13985606