Form Decorator incorrectly applies to embedded Webform submission forms during entity rendering

Problem/Motivation

The SiteOverrideContentEntityFormDecorator is being applied while rendering embedded Webforms inside overridden entity forms, although it should only decorate the actual content entity form.

This leads to the decorator being executed for WebformSubmissionForm instances that are rendered as part of a field inside the entity form.

applies() is executed for all forms, including embedded Webform submission forms rendered inside entity fields.