Add override possibility to page aware widgets

[dododedodonl]

Description

For some resource list pages, I have extra logic and parameters in the mount method. In order for widgets to be able to render correctly, some data has to be passed into the mount method params. This makes it possible to implement this logic easily.

Visual changes

None.

Functional changes

• Code style has been fixed by running the composer cs command.
• Changes have been tested to not break existing functionality.
• Documentation is up-to-date.

[danharrin]

Thanks