[jdk11u-dev] RFR: 8248352: [TEST_BUG] Test test/jdk/java/awt/font/TextLayout/ArabicDiacriticTest.java can leave frame open

[Aleksey Shipilev]

Clean backport to match `11.0.13-oracle`.

Additional testing:
 - [x] Affected test still passes

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

Commit messages:
 - Backport aa3862403bf5977844e1c362494619f44ce069dc

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/244/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=244&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8248352
  Stats: 11 lines in 1 file changed: 2 ins; 4 del; 5 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/244.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/244/head:pull/244

PR: https://git.openjdk.java.net/jdk11u-dev/pull/244