Multi polygon highlights independently if non-contiguous

[willcrouch]

Describe the bug
Anytime I load a map of the us with something like census mapping, land masses like the Alaskan islands or Michigan don't highlight together with the rest of the land mass.

To Reproduce

mapdeck(
  pitch = 35,
  token = "token"
) %>%
  add_polygon(
    data = States,
    auto_highlight = TRUE,
    highlight_colour = "#AAFFFFFF"
  )

Expected behaviour
If I highlighted Michigan, I would assume both sections would be highlighted

Versions
0.2.1

[SymbolixAU]

duplicate of - #160

At the moment this is not possible without writing a custom layer extension.

I plan to get to this some day, but not immediately.