Deprecation: #72856 - Removed RTE "modes" option

See Issue #72856

Description

The RTE "modes" option that was added to a RTE enabled TCA field in the "defaultExtras" section has been removed.

The RTE is now loaded via the configuration from TSconfig, usually set by "modes" or "overruleMode" (used by default), and loaded even without the RTE mode set in the TCA field defaultExtras section.

Impact

Extension authors do not need to set the defaultExtras "mode=ts_css" parameter explicitly.

Migration

When configuring a RTE field in a TYPO3 extension the defaultExtras part should bet set to richtext:rte_transform instead of richtext:rte_transform[mode=ts_css] in order to render the RTE.