Breaking: #69161 - Removed includeCsh setting from ContainerViewHelper 

See forge#69161

Description 

Include CSH setting in <f:be.container> is not needed anymore and has therefore been removed. The JavaScript will be loaded automatically when ext:cshmanual is enabled.

Impact 

Using <f:be.container> view helpers in a custom Backend module, setting the includeCsh property, will result in a fatal error.

Affected Installations 

Extensions that use <f:be.container> which set the setting includeCsh

Migration 

Remove the property from the template. When ext:cshmanual is enabled the JavaScript is loaded automatically.