[jdk25u] RFR: 8362207: Add more test cases for possible double-rounding in fma

[Abhishek N]

jdk-25.0.1/bin/java -jar jtreg7.5.2/jtreg/lib/jtreg.jar -testjdk:jdk-25.0.1 -verbose:summary -dir:jdk25u-cpu/open/test/jdk/ java/lang/Math/FusedMultiplyAddTests.java jdk/incubator/vector/BasicFloat16ArithTests.java
Passed: java/lang/Math/FusedMultiplyAddTests.java
Passed: jdk/incubator/vector/BasicFloat16ArithTests.java
Test results: passed: 2
Report written to C:\jck\colocation\JTreport\html\report.html
Results written to C:\jck\colocation\JTwork

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Commit messages:
 - Backport 6e368e0c696bc9b2118014937aa2e091ea662985

Changes: https://git.openjdk.org/jdk25u/pull/114/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u&pr=114&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8362207
  Stats: 12 lines in 2 files changed: 6 ins; 0 del; 6 mod
  Patch: https://git.openjdk.org/jdk25u/pull/114.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u.git pull/114/head:pull/114

PR: https://git.openjdk.org/jdk25u/pull/114