support removing attributes from animated elements

[LoganDark]

Why

inert does not accept inert='', inert='false', inert='undefined' or etc. The attribute must be entirely removed in order to enable the element again. disabled works the same way.

What

If a value resolves to undefined (not null or false or otherwise) its attribute will now be entirely removed.

Checklist

• [x] Ready to be merged

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🦋 Changeset detected

Latest commit: 66bf995efd91371678172d888f1c2a0704961bf2

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 11 packages

| Name | Type | | ---------------------- | ----- | | @react-spring/web | Patch | | @react-spring/animated | Patch | | @react-spring/core | Patch | | @react-spring/parallax | Patch | | @react-spring/rafz | Patch | | @react-spring/shared | Patch | | @react-spring/types | Patch | | @react-spring/konva | Patch | | @react-spring/native | Patch | | @react-spring/three | Patch | | @react-spring/zdog | Patch |

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Name	Status	Preview	Updated (UTC)
react-spring	✅ Ready (Inspect)	Visit Preview	Jun 13, 2024 2:41pm

[LoganDark]

I suppose right now it's impossible for a spring value to even be null or undefined without an interpolation (at least when using useSpring), because of #2295. I'm off work for the week, so I can look into this more next Monday (especially since writing brand new tests will probably require me to clone/install everything anyway).