feat(ignoreSideEffectTags): support style in svg

[azaleta]

style should not be removed from context if it's in svg.
https://www.w3.org/TR/SVG2/styling.html

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[DrJume]

This would be great. I always have to resort to SVGO to compile the <style> into inline styles...
Why are PRs with good ideas getting ignored?

[haoqunjiang]

I think it's been well-discussed in vuejs/vue#11697
I don't think we'll accept a PR that simply keeps all the inline styles in SVG.

For escape hatches, I suggest opening an RFC at https://github.com/vuejs/rfcs/discussions to discuss detailed designs that can balance ease of use and the side-effect leakage concern.

[DrJume]

Thank you for getting back to this PR.
The decision comes by surprise, as many have pointed out it's against the Web Standard and seems to be a idiosyncrasy of Vue.

Maybe instead of stripping the style tag completely, it could be replaced with a namespaced tag by Vue automatically.