Pavel Yaskevich 3cc24f7c19 [Serialization] Serialize a flag that indicates whether ExtensibleEnum feature is supported by a module ...

When `ExtensibleEnums` flag is set, it's going to be reflected in
the module file produced by the compiler to make sure that consumers
know that non-`@frozen` enumerations can gain new cases in the
future and switching cannot be exhaustive.

2025-02-25 00:05:21 -08:00

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