RFR: 8353749: Improve security warning when using JKS or JCEKS keystores [v4]

[Hai-May Chao]

> This PR improves security warning when using JKS or JCEKS keystores.

Hai-May Chao has updated the pull request incrementally with one additional commit since the last revision:

  Removed bugid from Compatibility.java test

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/27624/files
  - new: https://git.openjdk.org/jdk/pull/27624/files/f582d0fa..af301060

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=27624&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=27624&range=02-03

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/27624.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/27624/head:pull/27624

PR: https://git.openjdk.org/jdk/pull/27624