[jdk11u-dev] RFR: 8274606: Fix jaxp/javax/xml/jaxp/unittest/transform/SurrogateTest.java test

[Nagata-Haruhito]

Here is backport of JDK-8274606 for jdk11u.
This is a test fix and applied clean.

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Depends on: https://git.openjdk.org/jdk11u-dev/pull/1907

Commit messages:
 - backport 7eb0372e55f23275b12470593adc97f1b79bc965

Changes: https://git.openjdk.org/jdk11u-dev/pull/1934/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1934&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8274606
  Stats: 10 lines in 1 file changed: 3 ins; 1 del; 6 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1934.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/1934/head:pull/1934

PR: https://git.openjdk.org/jdk11u-dev/pull/1934