[code-reflection] RFR: Lower SwitchExpressionOp

[Paul Sandoz]

On Wed, 3 Apr 2024 23:53:00 GMT, Mourad Abbay <mabbay at openjdk.org> wrote:

> Lowering of SwitchExpressionOp

That looks a good start. Also add a test case for a switch expression with case statement that falls through to the next case statement. (See `constantCaseLabelFallthrough` in `SwitchExpressionTest`).

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PR Review: https://git.openjdk.org/babylon/pull/45#pullrequestreview-1984228218