RFR: 8313621: test/jdk/jdk/internal/math/FloatingDecimal/TestFloatingDecimal should use RandomFactory [v2]

[Brian Burkhalter]

> Change test to use `RandomFactory` instead of `new Random()` and convert it to JUnit 5.

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

  8313621: assertTrue -> assertEquals

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Changes:
  - all: https://git.openjdk.org/jdk/pull/16130/files
  - new: https://git.openjdk.org/jdk/pull/16130/files/639a2db3..3f4fc63d

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=16130&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=16130&range=00-01

  Stats: 9 lines in 1 file changed: 0 ins; 0 del; 9 mod
  Patch: https://git.openjdk.org/jdk/pull/16130.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16130/head:pull/16130

PR: https://git.openjdk.org/jdk/pull/16130