RFR: 8317687: (fs) FileStore.supportsFileAttributeView(posix) incorrectly returns 'true' for FAT32 volume on macOS

[Brian Burkhalter]

Change `BsdFileStore.supportsFileAttributeView` to return false for POSIX attributes when the associated volume file system type is FAT32.

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Commit messages:
 - 8317687: (fs) FileStore.supportsFileAttributeView(posix) incorrectly returns 'true' for FAT32 volume on macOS

Changes: https://git.openjdk.org/jdk/pull/16084/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=16084&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8317687
  Stats: 32 lines in 2 files changed: 27 ins; 1 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/16084.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16084/head:pull/16084

PR: https://git.openjdk.org/jdk/pull/16084