RFR: 8185429: [macos] After the dialog is closed, there is no window become active.

[Alisen Chung]

After a modal dialog is closed, its parent window should be pushed to the front and made key.

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Commit messages:
 - removed from ProblemList.txt
 - 8185429: [macos] After the dialog is closed, there is no window become active.

Changes: https://git.openjdk.java.net/jdk/pull/5884/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=5884&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8185429
  Stats: 5 lines in 2 files changed: 4 ins; 1 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5884.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5884/head:pull/5884

PR: https://git.openjdk.java.net/jdk/pull/5884