V15: Revert "Fix: RTE markup props not up to date issue"#18879

iOvergaard merged 4 commits intorelease/15.3.1umbraco/Umbraco-CMS:release/15.3.1from

v15/bugfix/tinymce-chars-regressionumbraco/Umbraco-CMS:v15/bugfix/tinymce-chars-regressionCopy head branch name to clipboard