fix(draw/snapsvg-extensions): use document.body in favour of query
fix(draw/snapsvg-extensions): use document.body in favour of query

bpmn-io/diagram-js,tsneed290/diagram-js,thr0w/diagram-js,tsneed290/diagram-js,pedesen/diagram-js,thr0w/diagram-js,pedesen/diagram-js,chudaol/diagram-js