Font-size Property Restriction: No Support for 'pt' Units

[Moath-Zaghdad]

Describe the bug

On version 7.2.0 you can create a new font element and set the font to 10pt or 10px without any issue, however on on 7.3.3 the font-size attribute gets converted to float, note this line

svgedit/packages/svgcanvas/core/undo.js

Line 192 in 2f9f6e2

elem.setAttribute(attr, isNaN(parseFloat(newValue)) ? newValue : parseFloat(newValue))

which use to be

svgedit/packages/svgcanvas/undo.js

Line 192 in f477598

elem.setAttribute(attr, newValue)

[jfhenon]

Good point. We need to review the function changeSelectedAttributeNoUndoMethod