plotly isn't working with scale_fill_binned

[darcey-s]

Same issue as #2357 and #5926. Same minimal reproducible example still throws up the errors:
Warning in min(x, na.rm = na.rm) :
no non-missing arguments to min; returning Inf
Warning in max(x, na.rm = na.rm) :
no non-missing arguments to max; returning -Inf
Warning: Error in [.data.frame: undefined columns selected

library(ggplot2)
library(plotly)

xy_grid <- expand.grid(ps=seq(-1,3, length=100),
trs=seq(-1,3,length=100))
xy_grid$ptl <- xy_grid$ps^2 + xy_grid$trs^2

theme_set(theme_bw())
g1 <- ggplot(xy_grid) +
geom_raster(aes(y=ps,x=trs,fill=ptl), interpolate = TRUE) +
geom_contour(aes(y=ps,x=trs,z=ptl), breaks = c(2,4,6,8,10), color='black')

this works
ggplotly(g1)

adding scale_fill_binned
g2 <- g1 + scale_fill_binned(low = 'red', high = 'green', breaks = c(2,4,6,8,10))

this does not work
ggplotly(g2)