[jdk20] RFR: 8298905: Test "java/awt/print/PrinterJob/ImagePrinting/PrintARGBImage.java" fails because the frames of instruction does not display [v3]

[Alexander Zvegintsev]

> openjdk/jdk#9525 has changed behavior of PassFailJFrame.
> it doesn't call `setVisible()` from its constructor on instruction window anymore and some tests were not ready for that.
> 
> So adding `positionTestWindow()` fixes the issue.

Alexander Zvegintsev has updated the pull request incrementally with one additional commit since the last revision:

  fix spacing

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

Changes:
  - all: https://git.openjdk.org/jdk20/pull/46/files
  - new: https://git.openjdk.org/jdk20/pull/46/files/8fbac73e..eb179ee7

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk20&pr=46&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk20&pr=46&range=01-02

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk20/pull/46.diff
  Fetch: git fetch https://git.openjdk.org/jdk20 pull/46/head:pull/46

PR: https://git.openjdk.org/jdk20/pull/46