Deprecation: #77826 - RTEHtmlArea Spellchecker entrypoint 

See forge#77826

Description 

The entry point for HTTP Requests SpellCheckingController->main within RTEHtmlArea has been marked as deprecated.

Impact 

Calling the PHP method above will trigger a deprecation log entry.

Affected Installations 

All TYPO3 instances calling this PHP method.

Migration 

Use SpellCheckingController->processRequest instead.