[code-reflection] RFR: 8337156: Generate code model for switch expression that throws when no label applies [v6]

[Mourad Abbay]

> Update the code model generation of switch expression to throw if no label applies.

Mourad Abbay has updated the pull request incrementally with two additional commits since the last revision:

 - Add a comment about missing switch expression tests
 - Revert unnecessary changes

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Changes:
  - all: https://git.openjdk.org/babylon/pull/195/files
  - new: https://git.openjdk.org/babylon/pull/195/files/edd59df8..a4960d88

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=babylon&pr=195&range=05
 - incr: https://webrevs.openjdk.org/?repo=babylon&pr=195&range=04-05

  Stats: 51 lines in 2 files changed: 7 ins; 4 del; 40 mod
  Patch: https://git.openjdk.org/babylon/pull/195.diff
  Fetch: git fetch https://git.openjdk.org/babylon.git pull/195/head:pull/195

PR: https://git.openjdk.org/babylon/pull/195