[jdk21u-dev] RFR: 8337998: CompletionFailure in getEnclosingType attaching type annotations

[Liam Miller-Cushon]

This is a backport of [JDK-8337998](https://bugs.openjdk.org/browse/JDK-8337998), which is a follow-up to [JDK-8225377](https://bugs.openjdk.org/browse/JDK-8225377).

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Depends on: https://git.openjdk.org/jdk21u-dev/pull/1252

Commit messages:
 - Backport 9e282e5c966a9c065de8b901b7d30bb5c9ccf243

Changes: https://git.openjdk.org/jdk21u-dev/pull/1253/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=1253&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8337998
  Stats: 116 lines in 4 files changed: 113 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/1253.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/1253/head:pull/1253

PR: https://git.openjdk.org/jdk21u-dev/pull/1253