… not be included in the examples (plotly#2486)

* Fixing docs for config() to avoid deprecated example

* Adding unit test for deprecation warning

* Rebuilding docs for collaborated deprecation change

* test: capture Windows path regression in kaleido

* fix: avoid embedding Windows paths in kaleido Python code

* docs: note Windows save_image fix in news

* test: tighten kaleido review follow-ups

* fix: harden kaleido context cleanup

* fix: update test expectation

* update visual tests

* Make merged-legend title order match legend-entry order

ggplot2's Guides$merge() breaks ties between same-order guides using a
content hash (rlang::hash()), which has no relation to aesthetic
declaration order. A recent rlang release changed that hash, flipping
the tie-break and silently reordering combined legend titles (e.g.
"factor(vs)<br />factor(cyl)" became "factor(cyl)<br />factor(vs)").

Legend entries themselves are named independently, always in aesthetic
declaration order (layers2traces.R's discreteScales), so title order
and entry order could now disagree. Reorder guides in
get_gdefs_ggproto() by (explicit guide order, aesthetic declaration
order) so the title always agrees with the entries it labels,
regardless of upstream hashing changes.

* fix: replace deprecated .Label/.Names structure() names in tests

Silences the R CMD check NOTE about deprecated special names in
structure() calls.

* Revert changes to visual tests

* Update other visual tests

* Update news

* v4.12.1 release

* Fix broken links flagged by urlchecker

Replace the dead plotly chart-studio image embed in README with a
locally rendered PNG of the actual surface plot code shown above it,
and repoint the NEWS webinar link at a Wayback Machine snapshot since
the live page is gone.