Auto merge of #20396 - Xanewok:webgl-typed-arrays, r=jdm

Replace `object` function arguments in WebGL with typed arrays

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Could use a https://github.com/servo/rust-mozjs/pull/402 in some places, as this should simplify a little bit and remove unnecessary `#[allow(unsafe_code)]` attributes.

I sort of hacked my way through for https://github.com/servo/servo/issues/20394 since I encountered this issue as well. I agree that the comment above makes me feel uneasy about this and feels like I'm missing something and this shouldn't be the way we eventually resolve the overloads with auto rootable types (talking about this: https://github.com/servo/servo/pull/20396/files#diff-60d01595cff328c165842fea9e4ccbc2R428).

r? @jdm

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- [X] These changes fix #20342 (github issue number if applicable).

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