set_enabled
Description:
Sets whether this is enabled.
Note: 
      
        
    
    See [the migration guide](migrating-to-breakpoints.html#replace-adwsqueezer)
If a child is disabled, it will be ignored when looking for the child fitting the available size best.
This allows to programmatically and prematurely hide a child even if it fits in the available space.
This can be used e.g. to ensure a certain child is hidden below a certain window width, or any other constraint you find suitable.
Parameters:
| this | a squeezer page | 
| enabled | whether this is enabled |