SVGHMI: JsonTable: Fixed options not being passed in JSON post when jumping to a page where additional variables are pre-defined by a HMI:VarInit.
Was JS Fetch Promise not executed late enough, and gathering JsonTable variables before the sequence of calls to dispatch() was finished.

<?xml version='1.0' encoding='utf-8'?>
<BaseParams Name="svgui-0" IEC_Channel="0"/>