[BUG] incorrect abcissa when combining twinx() and link=:x

[JakeZw]

This bug is described in detail in discourse.

Backends

This bug occurs on ( insert x below )

Backend	yes	no	untested
gr (default)	yes
pythonplot			untested
plotlyjs			twinx() does not work
pgfplotsx			untested
unicodeplots			untested
inspectdr			twinx does not work as per recollection
gaston			untested

Versions

Plots.jl version: 1.40.9
Backend version (]st -m <backend(s)>): not shown
Output of versioninfo():
julia> versioninfo()
Julia Version 1.11.3
Commit d63adeda50 (2025-01-21 19:42 UTC)
Build Info:
Official https://julialang.org/ release
Platform Info:
OS: Windows (x86_64-w64-mingw32)
CPU: 12 × Intel(R) Core(TM) i7-9850H CPU @ 2.60GHz
WORD_SIZE: 64
LLVM: libLLVM-16.0.6 (ORCJIT, skylake)
Threads: 8 default, 0 interactive, 4 GC (on 12 virtual cores)
Environment:
JULIA_EDITOR = code
JULIA_NUM_THREADS = 8

julia>