RFR: 8368335: Refactor the rest of Locale TestNG based tests to JUnit

[Chen Liang]

On Mon, 22 Sep 2025 22:56:55 GMT, Justin Lu <jlu at openjdk.org> wrote:

> Please review this PR which finishes the conversions of _TestNG_ to _JUnit_ within the Locale tests. (Primarily under bcp47u with a few other stragglers.) Tests pass as before. The same number of tests completed in the test results section remain the same.
> 
> test/jdk/java/util/Locale/LocaleMatchingTest.java
> test/jdk/java/util/Locale/RequiredAvailableLocalesTest.java
> test/jdk/java/util/Locale/TestOf.java
> test/jdk/java/util/Locale/bcp47u/CalendarTests.java
> test/jdk/java/util/Locale/bcp47u/CurrencyFormatTests.java
> test/jdk/java/util/Locale/bcp47u/CurrencyTests.java
> test/jdk/java/util/Locale/bcp47u/DisplayNameTests.java
> test/jdk/java/util/Locale/bcp47u/FormatTests.java
> test/jdk/java/util/Locale/bcp47u/SymbolsTests.java
> test/jdk/java/util/Locale/bcp47u/SystemPropertyTests.java

Marked as reviewed by liach (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/27441#pullrequestreview-3258815087