LP#1999944: fix bug that can break drawing the folder tree for reports

LP#1999944: fix bug that can break drawing the folder tree for reports

Specifically, skip drawfolders iteration if parent node cannot be
found and eport invalid parent folder in the browser console.

For example, if a user creates a template folder that is not shared
that has a child folder that _is_ shared, another user at the library
that the folder is shared with would see their report folders be
incompletely rendered.

Signed-off-by: Llewellyn Marshall <llewellyn.marshall@ncdcr.gov>
Signed-off-by: blake <blake@mobiusconsortium.org>
Signed-off-by: Galen Charlton <gmc@equinoxOLI.org>