RFR: 8376419: (fs) Minor improvement of java/nio/file/attribute/UserDefinedFileAttributeView/Basic.java [v2]

[Brian Burkhalter]

> 1. Use `RandomFactory` instead of `new Random` to allow reproducibility.
> 2. Use `jtreg.SkippedException` instead of printing a message and returning silently.

Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:

  8376419: Align @summary text with other tests using RandomFactory

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Changes:
  - all: https://git.openjdk.org/jdk/pull/29434/files
  - new: https://git.openjdk.org/jdk/pull/29434/files/f843deb3..a31c9b73

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=29434&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=29434&range=00-01

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/29434.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29434/head:pull/29434

PR: https://git.openjdk.org/jdk/pull/29434