RFR: 8341935: javac states that -proc:full is the default but the default as of 23 is -proc:none

[Joe Darcy]

Update javac man page is describe current behavior; includes updates discussed in CSR [JDK-8321319](https://bugs.openjdk.org/browse/JDK-8321319) that were not included in the man pages for JDK 23 GA.

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Commit messages:
 - JDK-8341935: javac states that -proc:full is the default but the default as of 23 is -proc:none

Changes: https://git.openjdk.org/jdk/pull/22227/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22227&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8341935
  Stats: 26 lines in 1 file changed: 14 ins; 0 del; 12 mod
  Patch: https://git.openjdk.org/jdk/pull/22227.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22227/head:pull/22227

PR: https://git.openjdk.org/jdk/pull/22227