Deprecation: #77826 - RTEHtmlArea Spellchecker entrypoint

See Issue #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.