[jdk17u-dev] RFR: 8284884: Replace polling with waiting in javax/swing/text/html/parser/Parser/8078268/bug8078268.java

[Martin Doerr]

Clean backport of [JDK-8284884](https://bugs.openjdk.java.net/browse/JDK-8284884)

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Commit messages:
 - Backport 53580b336ac83addfaf20763e37781cebec7c531

Changes: https://git.openjdk.java.net/jdk17u-dev/pull/353/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u-dev&pr=353&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8284884
  Stats: 27 lines in 1 file changed: 10 ins; 8 del; 9 mod
  Patch: https://git.openjdk.java.net/jdk17u-dev/pull/353.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17u-dev pull/353/head:pull/353

PR: https://git.openjdk.java.net/jdk17u-dev/pull/353