[BUG] `vline!` overrides previously set `formatter`

[yha]

Details

plot(rand(4) .* 10^6, rand(4) .* 10^6, xformatter=:plain, yformatter=:plain)
vline!([10^6])

xformatter=:plain, yformatter=:plain is ignored.

This works fine with hline!:

plot(rand(4) .* 10^6, rand(4) .* 10^6, xformatter=:plain, yformatter=:plain)
hline!([10^6])

Backends

This bug occurs on ( insert x below )

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

Versions

Plots.jl version: 1.36.3
Backend version (]st -m <backend(s)>): GR 0.69.5
Output of versioninfo():

Julia Version 1.7.2
Commit bf53498635 (2022-02-06 15:21 UTC)
Platform Info:
  OS: Windows (x86_64-w64-mingw32)
  CPU: Intel(R) Core(TM) i7-9800X CPU @ 3.80GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-12.0.1 (ORCJIT, skylake-avx512)
Environment:
  JULIA_EDITOR = code
  JULIA_NUM_THREADS = 4

[bbejanov]

I have the same issue using the GR backend.
https://discourse.julialang.org/t/how-to-preserve-xformatter-when-adding-a-vline/92051

[pablosaa]

I would like to report that the changes to solve this bus have, however, created the following new bug: #4660