Breaking: #72888 - Removed HtmlParser mapTags functionality 

See forge#72888

Description 

The functionality to map tags explicitly from the HtmlParser code has been removed:

  • HtmlParser::mapTags()
  • RteHtmlParser::defaultTStagMapping()

Impact 

Calling one of the two methods above will result in a PHP fatal error.

Affected Installations 

Any installation using custom RTE transformation and wanting to remap tags while parsing HTML.

Migration 

Use the "remap" functionality of the keepTags logic within HtmlParser to achieve the same in custom transformations.