Integrated: 8317964: java/awt/Mouse/MouseModifiersUnitTest/MouseModifiersUnitTest_Standard.java fails on macosx-all after JDK-8317751

[Daniel D. Daugherty]

A trivial fix to merge two ProblemList entries for
java/awt/Mouse/MouseModifiersUnitTest/MouseModifiersUnitTest_Standard.java

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Commit messages:
 - 8317964: java/awt/Mouse/MouseModifiersUnitTest/MouseModifiersUnitTest_Standard.java fails on macosx-all after JDK-8317751

Changes: https://git.openjdk.org/jdk/pull/16154/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16154&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8317964
  Stats: 2 lines in 1 file changed: 0 ins; 1 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/16154.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16154/head:pull/16154

PR: https://git.openjdk.org/jdk/pull/16154