* fix(ui-primitives): keep backslashes in Windows-path Markdown destinations
CommonMark reads \. in a link destination as an escaped dot, so
[x](D:\repo\.github\a.md) opened D:\repo.github\a.md. Destinations
that look like Windows paths now keep their authored text.
Fixes#7095
* fix(ui-primitives): cover relative paths and character references
Treat a backslash destination without a URL scheme as a Windows path
when it has no slash or a backslash before a letter or digit, keep
every backslash literal there, and still decode character references.
Pin the behavior in the Markdown file-links Web snapshot.
* chore: list micromark-util-decode-string in third-party notices
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Co-authored-by: Turtle <[email protected]>