D3 zoom fail on nested svg

[Eymeric65]

When using D3 zoom with mermaid graph that contain nested svg, it fails due to the way d3.selectAll works :

var svgs = d3.selectAll("{d3_selector}");

select all the subsequent svg in case of setting up the global zoom function.

In conclusion this likely fail.

var svgs = d3.selectAll(.mermaid svg);