Check the element type before calling createRadio from select()

[lindapaiste]

Only call createRadio from select() if the element is a valid radio parent (span or div)

Resolves #6836

Changes:
Adds a check (elt.tagName === 'DIV' || elt.tagName === 'SPAN') before calling createRadio. Other element types will just get a normal p5.Element.

I chose the elt.tagName === syntax because that is what is used in the lines above this. Note that createRadio uses an instanceof check (arg0.elt instanceof HTMLDivElement || arg0.elt instanceof HTMLSpanElement), but the result should be the same.

PR Checklist

• npm run lint passes
• Inline documentation is included / updated
• Unit tests are included / updated

[davepagurek]

Looks good! This looks like it could still potentially have some false positives, but fewer than before, and enables the use mentioned in the issue.

[limzykenneth]

Thanks. I've merged this for now but we probably need to preview p5.DOM as part of 2.0 overall for something a bit more robust.