Handle sub/super-scripts in rich text  - it aims to fix #14317;  - change the fontSize and the verticalAlign properties according to the position of the text.
Handle sub/super-scripts in rich text
 - it aims to fix #14317;
 - change the fontSize and the verticalAlign properties according to the position of the text.

timvandermeij/pdf.js,macroplant/pdf.js,nawawi/pdf.js,nawawi/pdf.js,macroplant/pdf.js,mozilla/pdf.js,macroplant/pdf.js,showpad/mozilla-pdf.js,Shoobx/pdf.js,timvandermeij/pdf.js,showpad/mozilla-pdf.js,timvandermeij/pdf.js,showpad/mozilla-pdf.js,Shoobx/pdf.js,Snuffleupagus/pdf.js,mozilla/pdf.js,mozilla/pdf.js,Snuffleupagus/pdf.js,Snuffleupagus/pdf.js,nawawi/pdf.js,Shoobx/pdf.js