RAF loop blocks interaction in gl plots.

[rreusser]

SVG needs interactions disabled during animation since the transforms get too difficult to manage. WebGL plots do not. Opening this issue to track progress on re-enabling. It won't be perfect since a plot context does not need to be strictly webgl xor svg, but we can at least improve the situation.

[rreusser]

Oh. It's not disabled at all. :/ It simply doesn't work since it continuously resets the axis range every time it draws, unless a mouse-up event commits the new scene parameters before the next frame.

[etpinard]

Moved to #3759