RFR: 8370237: AssertionError in Annotate.fromAnnotations with -Xdoclint and type annotations [v3]

[Liam Miller-Cushon]

> Hi, please consider this fix for a crash with `-Xdoclint` and type annotations. It is a generalization of a previous fix for [JDK-8266082](https://bugs.openjdk.org/browse/JDK-8266082).

Liam Miller-Cushon has updated the pull request incrementally with one additional commit since the last revision:

  Fix typo in test

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/27901/files
  - new: https://git.openjdk.org/jdk/pull/27901/files/a99313bc..6af3b250

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27901&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27901&range=01-02

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/27901.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27901/head:pull/27901

PR: https://git.openjdk.org/jdk/pull/27901