Inline font-size style using absolute sizes (small, medium, large etc) throws error. setContents() fails

[andylwelch]

Describe the bug
Rendering html with an inline style that has a font-size as a word (e.g. small) throws an error which crashes the editor completely in my page.

To Reproduce
Steps to reproduce the behavior:

1. Go to http://suneditor.com/sample/index.html
2. Click on Code view button
3. Paste html in editor:
   <p><span style='font-size: small;'>Test</span></p>
4. Open browser console, see error:

Uncaught TypeError: Cannot read properties of null (reading '1')
    at Object._cleanStyle (core.js:5277:96)
    at Object._cleanTags (core.js:5335:34)
    at String.replace (<anonymous>)
    at Object.cleanHTML (core.js:5460:111)
    at Object.getContents (core.js:5114:35)
    at h (history.js:56:30)
    at Object.push (history.js:114:21)
    at Object.toggleCodeView (core.js:4685:34)
    at Object.commandHandler (core.js:4515:26)
    at Object.actionCall (core.js:4464:22)

Uncaught TypeError: Cannot read properties of null (reading '1')
    at Object._convertFontSize (core.js:5224:29)
    at Object.active (fontSize.js:66:89)
    at Object._applyTagEffects (core.js:6394:90)
    at HTMLDivElement.onClick_wysiwyg (core.js:6581:23)

Expected behavior
HTML with valid font-size style attribute should render without crashing.

Screenshots

Crash:

On Suneditor.com

Desktop (please complete the following information):

• OS: Windows
• Browser: Chrome
• Version: 111.0.5563.147

Additional context
Looking at the code, the bug is only if fontSize plugin is utilised. Possibly a mistmatch in the regex used for testing and the regex used for matching/replacing:

...
if (!this._cleanStyleRegExp.fontSizeUnit.test(r[0])) {
        r[0] = r[0].replace(this._w.RegExp('\\d+' + r[0].match(/\d+(.+$)/)[1]), this._convertFontSize.bind(this, options.fontSizeUnit));
}
...

[JiHong88]

The 2.44.7 version has been updated.
Thank you.