RFR: 8328370: Convert java/awt/print/Dialog/PrintApplet.java applet test to main

[Damon Nguyen]

Convert java/awt/print/Dialog/PrintApplet.java applet test to main using PassFailJFrame. Also rename the test to PrintModalDialog.java since this is no longer an applet. Added test instructions related to the linked JBS issue.

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Commit messages:
 - Initial test conversion

Changes: https://git.openjdk.org/jdk/pull/18362/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18362&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8328370
  Stats: 303 lines in 3 files changed: 132 ins; 171 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/18362.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18362/head:pull/18362

PR: https://git.openjdk.org/jdk/pull/18362