Let's rotate an SVG widget

[hh]

Maintain aspect ratio is for resizing the svg object
when resizing the widget.

What you want is  probably that the widget resizes its
rectangle *minimally* so that the size of the svg remains
unchanged when rotating. That's not (yet) available in LCB.

But you can compute the needed rectangle and resize the
widget accordingly by LC Script.
(I did that for a rotating text widget).