RFR: JDK-8328115 : Convert java/awt/font/TextLayout/TestJustification.html applet test to main

[Harshitha Onkar]

java/awt/font/TextLayout/TestJustification.html  is converted to main manual test using PassFailJFrame. 

This test was previously problemlisted on macOS. When tested on macOS, the problem still exists and not all lines are justified to the same length (lines containing Arabic & Hebrew differ by a small amount, Refer [JDK-8250791](https://bugs.openjdk.org/browse/JDK-8250791)). For this reason, the test is retained in problemlist but the extension is changed to .java to match the test changes.

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Commit messages:
 - reindented file
 - applet to main changes

Changes: https://git.openjdk.org/jdk/pull/18285/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18285&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8328115
  Stats: 359 lines in 3 files changed: 114 ins; 154 del; 91 mod
  Patch: https://git.openjdk.org/jdk/pull/18285.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18285/head:pull/18285

PR: https://git.openjdk.org/jdk/pull/18285