[code-reflection] RFR: Unify code that generates code model of switch statement and expression [v3]

[Mourad Abbay]

On Thu, 5 Sep 2024 16:49:14 GMT, Maurizio Cimadamore <mcimadamore at openjdk.org> wrote:

>> We want the regular default body to be in the last position.
>
> ok

This simplifies the lowering as example.

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PR Review Comment: https://git.openjdk.org/babylon/pull/220#discussion_r1745873546