Determine why search.page.help_search does not have a UUID in the 11.3 db dump

Problem/Motivation

#3581109: Move HelpSearch to Search sub-module discovered that the config entity search.page.help_search does not have a UUID in the 11.3 dump. Let's work out why.

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

Introduced terminology

API changes

Data model changes

Release notes snippet