axis labels duplicated in `heatmapgl` with `scrollZoom`

[antoinerg]

As shown in this Codepen, zooming in and out using the mouse wheel redraws axis labels on top of existing ones:

[etpinard]

Related #2436

[etpinard]

Worked ok in 1.31.2: https://codepen.io/etpinard/pen/zbLqor?editors=111

[etpinard]

Fixed in #3647