[jdk11u-dev] RFR: 8169954: JFileChooser/8021253: java.lang.RuntimeException: Default button is not pressed

[Goetz Lindenmaier]

I downport this for parity with 11.0.13-oracle.

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Commit messages:
 - Backport cacce843aac7380d61c9ef84254744125cccd713

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/416/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=416&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8169954
  Stats: 33 lines in 2 files changed: 11 ins; 4 del; 18 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/416.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/416/head:pull/416

PR: https://git.openjdk.java.net/jdk11u-dev/pull/416