[jdk11u-dev] RFR: 8316206: Test StretchedFontTest.java fails for Baekmuk font

[Goetz Lindenmaier]

I backport this for parity with 11.0.22-oracle.

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Commit messages:
 - Backport 00f585bd22f527eca0107a9b4ed366f25754f0be

Changes: https://git.openjdk.org/jdk11u-dev/pull/2147/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2147&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8316206
  Stats: 27 lines in 1 file changed: 25 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2147.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2147/head:pull/2147

PR: https://git.openjdk.org/jdk11u-dev/pull/2147