[BUG] [PlotlyJS] link=:both will unexpectedly make subplots layout with same origin

[FelipeLema]

Details

the following mwe will not plot correctly: p1 and p2 share origin and they shouldn't; they should be stacked one over the other

using Plots
plotlyjs() # works with `gr()`
let y1 = cumsum(rand(20)),
    y2 = cumsum(rand(20)),
    y3 = cumsum(rand(20)),
    y4 = cumsum(rand(20)),
    x = collect(1:20)

    p1 = plot(x, hcat(y1, y2), lab=["y1" "y2"])
    p2 = plot(x, hcat(y3, y4), lab=["y1" "y2"])
    plot(p1, p2, layout=(2, 1), link=:both)
end

as reference, here's the same plot with gr(). Looks as expected.

Do notice the link=:both. For the real version of this same code I want to explore plots with synchronized axis (xref #1371 )

Backends

This bug occurs on ( insert x below )

Backend	yes	no	untested
gr (default)		x
pythonplot			x
plotlyjs	x
pgfplotsx			x
unicodeplots			x
inspectdr			x
gaston			x

Versions

Plots.jl version:

(project) pkg> st -m Plots
Project project v0.1.0
Status `~/dev/project/Manifest.toml`
  [91a5bcdd] Plots v1.38.17

Backend version (]st -m <backend(s)>):

(project) pkg> st -m PlotlyJS
Project project v0.1.0
Status `~/dev/project/Manifest.toml`
  [f0f68f2c] PlotlyJS v0.18.10

Output of versioninfo():

Julia Version 1.9.2
Commit e4ee485e909 (2023-07-05 09:39 UTC)
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 4 × Intel(R) Core(TM) i5-3340 CPU @ 3.10GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-14.0.6 (ORCJIT, ivybridge)
  Threads: 1 on 4 virtual cores
Environment:
  JULIA_IMAGE_THREADS = 1