RFR: 8233558: [TESTBUG] WindowOwnedByEmbeddedFrameTest.java fails on macos

[Alisen Chung]

added export java.desktop/sun.lwawt.macosx:open

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Commit messages:
 - removed from ProblemList
 - 8233558: [TESTBUG] WindowOwnedByEmbeddedFrameTest.java fails on macos

Changes: https://git.openjdk.java.net/jdk/pull/6022/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6022&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8233558
  Stats: 2 lines in 2 files changed: 0 ins; 1 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6022.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6022/head:pull/6022

PR: https://git.openjdk.java.net/jdk/pull/6022