[jdk21u-dev] RFR: 8360411: [TEST] open/test/jdk/java/io/File/MaxPathLength.java Refactor extract method to encapsulate Windows specific test logic

[Goetz Lindenmaier]

I backport this for parity with 21.0.10-oracle.

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Commit messages:
 - Backport 016694bf74f6920f850330e353df9fd03458cca1

Changes: https://git.openjdk.org/jdk21u-dev/pull/2244/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2244&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8360411
  Stats: 20 lines in 1 file changed: 11 ins; 7 del; 2 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2244.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2244/head:pull/2244

PR: https://git.openjdk.org/jdk21u-dev/pull/2244