Suggestion for a new Package Information File element : "Toggleable"

In some use cases, a new element, which makes a check box of a component "visible" and "checked in default" but "not-toggleable", is needed.
For example, in case where the software vendor wants to force users always install/update a specific component.

The existing elements are not fitting to this requirement, for example :

• Setting "<Essential> true </Essential>" can force users to update a component when they use MaintenanceTool, but it does not work in Installer.
• Setting "<Checkable> false </Checkable>" simply hides the checkbox. It conflicts the setting of "<default> true </default>".

Reference : "Package Information File Syntax"
https://doc.qt.io/qtinstallerframework/ifw-component-description.html#package-information-file-syntax