aToC() throws on Arc command with rX or rY set to 0

[Kaiido]

Issue

I'm a gentledev i:

• fully read the README recently
• searched for existing issues
• checked I'm up to date with the latest version of the project

When calling SVGPathData.aToC() on a parsed string with an Arc command that as either rX, rY, or both set to 0, I'd expect that the Arc command is ignored, but currently an Error is thrown.

new SVGPathData("M0 0A80 0 0 0 0 125 125").aToC(); // throws invalid Array length error at mathUtils.ts l.167

The issue is that const partCount = Math.ceil(deltaPhi / 90 ); will be NaN.

A simple fix would be to do something like new Array(partCount || 0);, but it might require more investigation if other invalid values could make it there as well (e.g Infinity?).