usd: add more platform support

[star-hengxing]

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[gemini-code-assist]

Summary of Changes

Hello @star-hengxing, 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 significantly enhances the platform and architecture compatibility of the usd package. It achieves this by removing a restrictive architecture check for non-macOS systems and by broadening the on_install hook to cover all platforms except WebAssembly, streamlining the build process for a wider range of environments.

Highlights

• Relaxed Architecture Restrictions: Removed a check that previously limited the usd package to x86 architectures on non-macOS platforms, enabling broader architecture compatibility.
• Expanded Platform Support: Modified the installation logic to apply to all platforms except WebAssembly (WASM), replacing a specific list of linux, macosx, and windows with a more inclusive approach.

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[gemini-code-assist]

Code Review

This pull request aims to add more platform support for the usd package. It does this by removing an architecture check that limited builds to x86-64, and by broadening the on_install hook to apply to all platforms except wasm. While expanding platform support is a good goal, the change to !wasm is too aggressive and may lead to build failures on platforms that require special configuration, such as Android or MinGW. I've left a comment with a suggestion to be more specific about the supported platforms to ensure reliability.