Running FreeHEPSVGOffscreenRenderingTest runs into wrong failures

[NiklasRentzCAU]

The FreeHEPSVGOffscreenRenderingTest checks for String equivalence of the generated SVG, when running them locally on a Linux machine with Java 11 causes the SVGs to be equivalent, but with differently ordered attributes, causing the tests to fail. This is one of the failures as written to the console:

FreeHEPSVGOffscreenRenderingTest.test14c_singleKNodeWithEastPortWithSemanticData_And_WithOutsideLabelWithSemanticData_And_MultiLineTextWithSemanticData:1102->equalsSVGof:1106->equalsSVGof:1126 expected:
<<g stroke-[linejoin="miter" stroke-dashoffset="0" stroke-dasharray="none" stroke-width="1" stroke-miterlimit="10" stroke-linecap="butt">
<g fill="none" stroke-opacity="1" stroke="#000000">
  <path d="M 0.5 0.5 L 99.5 0.5 L 99.5 99.5 L 0.5 99.5 L 0.5 0.5 z"/>
</g>
<g id="MyPort" class="MyPortClass" klighd:MyKey="MyValue" klighd:My2ndKey="KPort:0">
<g transform="matrix(1, 0, 0, 1, 100, 47.5)">
<g fill="none" stroke-opacity="1" stroke="#000000">
  <path d="M 0.5 0.5 L 4.5 0.5 L 4.5 4.5 L 0.5 4.5 L 0.5 0.5 z"/>
</g>
</g>
<g id="MyLabel" class="MyLabelClass" klighd:MyKey="MyValue" klighd:My2ndKey="KLabel:0">
<g transform="matrix(1, 0, 0, 1, 106, 45)" fill-opacity="1" font-style="normal" font-family="Helvetica" font-weight="normal" stroke="none" fill="#000000" font-size="<FONT_SIZE>]" id="MyText" class=...>

but was:
<<g stroke-[dashoffset="0" stroke-linejoin="miter" stroke-dasharray="none" stroke-width="1" stroke-linecap="butt" stroke-miterlimit="10">
<g stroke-opacity="1" fill="none" stroke="#000000">
  <path d="M 0.5 0.5 L 99.5 0.5 L 99.5 99.5 L 0.5 99.5 L 0.5 0.5 z"/>
</g>
<g id="MyPort" class="MyPortClass" klighd:MyKey="MyValue" klighd:My2ndKey="KPort:0">
<g transform="matrix(1, 0, 0, 1, 100, 47.5)">
<g stroke-opacity="1" fill="none" stroke="#000000">
  <path d="M 0.5 0.5 L 4.5 0.5 L 4.5 4.5 L 0.5 4.5 L 0.5 0.5 z"/>
</g>
</g>
<g id="MyLabel" class="MyLabelClass" klighd:MyKey="MyValue" klighd:My2ndKey="KLabel:0">
<g transform="matrix(1, 0, 0, 1, 106, 45)" font-weight="normal" font-size="<FONT_SIZE>" font-family="Helvetica" font-style="normal" fill="#000000" fill-opacity="1" stroke="none]" id="MyText" class=...>

The tests should ignore such attribute re-orderings and still succeed in that case and not only work later when executed on GitHub Actions.