[code-reflection] RFR: Add isQuotable attribute to LambdaOp [v2]

[Chen Liang]

On Wed, 3 Sep 2025 21:52:34 GMT, Rémi Forax <forax at openjdk.org> wrote:

>> I was thinking more subjectively, more clearly indicating the pattern variable cannot be null (i realize the `case null, default` is also present).
>
> Conceptually, a case Foo is like an instanceof Foo, it does not match null.

I recall `@ParticipatesInPreview` only works for preview APIs instead of language features that ClassFile API needed custom backdoors from the JDK. See https://bugs.openjdk.org/browse/JDK-8308093.

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PR Review Comment: https://git.openjdk.org/babylon/pull/545#discussion_r2320412584