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Are there any plans for `ReceiveChannel.isClosedForReceive` to graduate from being "experimental"?

The reason I ask is that we were using some `@ExperimentalTime` stuff, and the upgrade from kotlinx-coroutines-core-jvm-1.4.2 to kotlinx-coroutines-core-jvm-1.4.3 caused this code to blow up, non-deterministically, at runtime. So now we're removing all uses of `@ExperimentalTime` and also `@ExperimentalCoroutinesApi` because they just seem too risky.

There isn't a great alternative to `isClosedForReceive` in some cases, though. From the git repo, it appears that `ReceiveChannel.isClosedForReceive` has existed for 4 years, so I'm surprised that it's still considered "experimental". How much longer before it's considered stable?