[V4] Gradient stop transitions

[goranalkovic-infinum]

Note

Search surfaced a ticket with a similar topic, but doesn't apply to V4 and what this idea is about.

Since V4 is using @property for gradient stop colors, it would be cool to have an option for transitioning them without having to add custom code - perhaps a transition-gradient utility? 😄

Arbitrary values are unfortunately not working, as they wrap custom property names with var().
For example, transition-[--tw-gradient-from,_--tw-gradient-to] outputs transition-property: var(--tw-gradient-from,_--tw-gradient-to), which is invalid. Correct output should be transition-property: --tw-gradient-from, --tw-gradient-to

Here's a Playground repro URL: https://play.tailwindcss.com/ZWA5E2RKCq