RFR: JDK-8325189: Enable this-escape javac warning in java.base

[Joe Darcy]

After the "this-escape" lint warning was added to javac (JDK-8015831), the base module was not updated to be able to compile with this warning enabled. This PR makes the necessary changes to allow the base module to build with the warning enabled.

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Commit messages:
 - JDK-8325189: Enable this-escape javac warning in java.base

Changes: https://git.openjdk.org/jdk/pull/17692/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=17692&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8325189
  Stats: 151 lines in 93 files changed: 149 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/17692.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17692/head:pull/17692

PR: https://git.openjdk.org/jdk/pull/17692