[jdk21u] RFR: 8320001: javac crashes while adding type annotations to the return type of a constructor

[Rob McKenna]

Minor changes required: 8320001

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Commit messages:
 - Backport 5e24aaf4f7f11862ec8ac9d5c3e65d614104fb2c

Changes: https://git.openjdk.org/jdk21u/pull/412/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk21u&pr=412&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8320001
  Stats: 143 lines in 2 files changed: 142 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk21u/pull/412.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u.git pull/412/head:pull/412

PR: https://git.openjdk.org/jdk21u/pull/412