RFR: 8290149: java/nio/file/Files/probeContentType/Basic.java fails on Windows Server 2019/2022

[KIRIYAMA Takuya]

On Windows Server 2019/2022, default content type of ".js" is set to "text/plain" in registry.


C:\>reg query HKEY_CLASSES_ROOT.js /v "Content Type"

HKEY_CLASSES_ROOT.js
    Content Type    REG_SZ    text/plain


So, "text/plain" should be added for content type of ".js".

I propose to add default registry value to expected list. After fix, test passes on Windows Server 2022.

Could you review this fix, please?

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Commit messages:
 - 8290149: java/nio/file/Files/probeContentType/Basic.java fails on Windows Server 2019/2022

Changes: https://git.openjdk.org/jdk/pull/9459/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=9459&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8290149
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/9459.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9459/head:pull/9459

PR: https://git.openjdk.org/jdk/pull/9459