Breaking: #88657 - Popup configuration in FormEngine dropped

See forge#88657

Description

The options options.popupWindowSize and options.rte.popupWindowSize used to configure popup sizes have been removed.

Impact

These options are not evaluated anymore.

Affected Installations

All installations using 3rd party extensions relying on the options are affected.

Migration

In most cases it's fine to remove the configuration.

In the unlikely case one is negatively affected by this change, fetch the configuration from backend user's TSConfig and use it where it is required.