fix: model-viewer@v3 uses lottie-web as a dev dependency

[robertsLando]

This issue was caused because the lottie-web is listed as a dev dep to use it's types, in this case import statement is wrong as it would import all the module on runtime, using import type will fix the issue and used to check the types only on compilation stage

Fixes #4090

[google-cla]

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[robertsLando]

@elalish I have compiled the google cla, just re-run checks and should be ok

[elalish]

Excellent, thank you for finding the elegant fix!

[robertsLando]

Thanks to you for this awesome module! 🙏🏻