RFR: 8344316: Add extra line in security/auth/callback/TextCallbackHandler/Password.java to make clear it is not a JTReg test [v6]

[Mikhail Yankelevich]

> * Add extra line in security/auth/callback/TextCallbackHandler/Password.java to make clear it is not a JTReg test
> * Test will now fail if run with JTReg

Mikhail Yankelevich has updated the pull request incrementally with one additional commit since the last revision:

  changed the test back to manual. Command to start the script is now generated by jtreg started ui

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Changes:
  - all: https://git.openjdk.org/jdk/pull/22951/files
  - new: https://git.openjdk.org/jdk/pull/22951/files/43553d62..1840d7aa

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22951&range=05
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22951&range=04-05

  Stats: 101 lines in 1 file changed: 74 ins; 10 del; 17 mod
  Patch: https://git.openjdk.org/jdk/pull/22951.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22951/head:pull/22951

PR: https://git.openjdk.org/jdk/pull/22951