Workspaces entity schema subscriber can miss workspace-compatibility in some situations

Problem/Motivation

When an entity type is updated to be workspace-compatible, \Drupal\workspaces\EventSubscriber\EntitySchemaSubscriber can miss that change and not add the needed revision metadata field.

Steps to reproduce

TODO.

Proposed resolution

Fix it.

Remaining tasks

TBD.

User interface changes

Nope.

Introduced terminology

Nope.

API changes

Nope.

Data model changes

Nope.

Release notes snippet

Nope.