libsdl3_ttf: fix windows download and disable submodules for git clone

[SirLynix]

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[gemini-code-assist]

Summary of Changes

Hello @SirLynix, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request enhances the build compatibility for the libsdl3_ttf package on Windows by enabling support for long file paths. This modification is crucial for preventing build failures or git clone issues that can occur when repository paths exceed the default Windows path length limits, ensuring a smoother development experience for Windows users.

Highlights

• Windows Long Paths: Enabled the platform.longpaths policy specifically for Windows hosts within the libsdl3_ttf package configuration. This change addresses potential issues with git clone operations that might encounter path length limitations on Windows.

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[gemini-code-assist]

Code Review

This pull request correctly enables long path support on Windows for the libsdl3_ttf package, which will resolve potential git clone failures due to path length limits. The change is well-implemented.

My main suggestion is to consider applying this same policy to other packages in the repository that are also fetched via Git (e.g., libsdl3, freetype, harfbuzz, plutosvg), as they are likely susceptible to the same issue on Windows. This would improve the robustness of the build process across the board.

I have also left one comment with a suggestion to add a code comment for better maintainability.

[SirLynix]

I moved back libsdl3_ttf to .zip because .tar.gz has symlinks that Windows cannot handle without admin

git cloning was failing because of filenames too long for windows (even with longpath) in harbuzz submodule, disabling submodules didn't work because of a bug (see xmake-io/xmake#6901 )