tmx: Fix build for Linuxbrew (#20219)
tmx: Fix build for Linuxbrew (#20219)

* tmx: Fix build for Linuxbrew

Needs libxml2 (also zlib, handled indirectly)

Also needs a test fix

* tmx: Fix style

Blank line between `depends_on` and `uses_from_macos`
maxim-belkin/homebrew-core,rwhogg/homebrew-core,Linuxbrew/homebrew-core,Linuxbrew/homebrew-core,rwhogg/homebrew-core,maxim-belkin/homebrew-core