Label: use style instead of invalid attribute

[deltragon]

The svg text element does not support an overflow attribute. Use the CSS overflow property instead.

This is purely for spec compliance (eg. for accessibility, WCAG 2.1 SC 4.1.1 requires this). It has no effect on behavior, as the overflow attribute was treated by most browsers as a CSS property anyways. This might also increase compatibility with some browsers/SVG parsers that did not support this fallback.

Note that yarn run build failed with some unrelated errors on my machine, so I did not include any build files.