Allow Gtk.jl to be installed on Windows on Julia 1.10.

[nhz2]

This PR allows Gtk.jl to be installed on Windows on Julia 1.10.

The version of adwaita_icon_theme_jll required by Gtk.jl contains symlinks. This prevents it from being installed on Windows in Julia 1.10 due to stricter artifact integrity checking. Ref: JuliaLang/Pkg.jl#3643 and JuliaPackaging/Yggdrasil#7860

This got fixed for the most recent version of adwaita_icon_theme_jll in JuliaPackaging/Yggdrasil#7930

However, it seems like adwaita_icon_theme_jll version 43 is not compatible with Gtk.jl Ref: #696

This PR replaces the adwaita_icon_theme_jll dependency with a regular artifact. For Linux and BSD this doesn't change anything, for Windows, a special version of adwaita_icon_theme is installed where the symlinks have been replaced with copies. This Windows version has the same tree hash as the version installed in Julia 1.9 on Windows if symlinks cannot be made.

You can check the git-tree-sha1 values in the Artifact.toml in this PR
and compare to the reported expected and calculated hashes in JuliaPackaging/Yggdrasil#7860

Calculated git-tree-sha1: 043d0732f572e66059278f5964e3752f018a5cdf
git-tree-sha1 = "043d0732f572e66059278f5964e3752f018a5cdf"

Also, currently, I am storing the Windows artifact at https://github.com/medyan-dev/SmallZarrGroups.jl/releases/download/v0.6.6/copy_symlinks_adwaita_icon_theme.v3.33.92.any.tar.gz but there may be a better place for it.

CC @jwahlstrand @revolutionflourlake772

[coveralls]

Pull Request Test Coverage Report for Build 7534881522

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+2.1%) to 69.086%

---

Totals
Change from base Build 3788169661:	2.1%
Covered Lines:	1875
Relevant Lines:	2714

---

💛 - Coveralls

[nhz2]

Closing because I think JuliaPackaging/Yggdrasil#8003 is a better fix.