beremiz

SVGHMI: fix JS error loading empty single page

2023-11-24, Edouard Tisserant
ecb947e5bbb4
SVGHMI: fix JS error loading empty single page

svg:svg tag should not be considered as a detachable group,
so filter only svg:g elements
<?xml version='1.0' encoding='utf-8'?>
<BaseParams xmlns:xsd="http://www.w3.org/2001/XMLSchema" IEC_Channel="0" Name="py_ext_0"/>