TinyMCE: include https://github.com/tinymce/tinymce/commit/85e22b58e9909f327afeed75dce81c41bf8cfd7dthat and quote one more use of "float". This is "reserved as future keyword by older ECMAScript specifications" according to https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Lexical_grammar and can throw a syntax error. See #28576.
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