[jdk21u-dev] RFR: 8354893: [REDO BACKPORT] javac crashes while adding type annotations to the return type of a constructor (JDK-8320001)

[Liam Miller-Cushon]

[JDK-8354893](https://bugs.openjdk.org/browse/JDK-8354893) is a redo of the backport of [JDK-8320001](https://bugs.openjdk.org/browse/JDK-8320001), which is a follow-up to [JDK-8225377](https://bugs.openjdk.org/browse/JDK-8225377).

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Commit messages:
 - 8354893: [REDO BACKPORT] javac crashes while adding type annotations to the return type of a constructor (JDK-8320001)

Changes: https://git.openjdk.org/jdk21u-dev/pull/1675/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1675&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8354893
  Stats: 143 lines in 2 files changed: 142 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1675.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1675/head:pull/1675

PR: https://git.openjdk.org/jdk21u-dev/pull/1675