[jdk8u-dev] RFR: 8198321: javax/swing/JEditorPane/5076514/bug5076514.java fails

[yaqsun]

I backport this for parity with 8u271.
Low risk, only test changes. And test have been locally verified to pass.

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Commit messages:
 - update Copyright
 - Backport cc3756b342a367d3d29a31a18bdcc2fa4797bdcf

Changes: https://git.openjdk.org/jdk8u-dev/pull/386/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=386&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8198321
  Stats: 10 lines in 1 file changed: 7 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/386.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/386/head:pull/386

PR: https://git.openjdk.org/jdk8u-dev/pull/386