Fix for CVE-714. See issue summary in google doc: https://docs.google.com/document/d/1-fRGDJ0M4_f1uddJLlCro3BqP7VFBbxLayz-z1dacBg/edit?tab=t.0#heading=h.xgujahakvhno

By limiting the path depth of the field in question for the CVE, we eliminate the possibility for making nonsensically / maliciously deep path that triggers the OOM, while not affecting any normal user functionality.

There is existing precedent in the server for limiting the path length of a document to 255 (here)