ICU-23325 Add a test case for the VTimeZone RRULE-UNTIL format issue.

[yumaoka]

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• Required: Issue filed: ICU-23325
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[yumaoka]

Investigating Java CI build failure.

[jira-pull-request-webhook]

Notice: the branch changed across the force-push!

• icu4j/main/core/src/test/java/com/ibm/icu/dev/test/timezone/TimeZoneRuleTest.java is different

View Diff Across Force-Push

~ Your Friendly Jira-GitHub PR Checker Bot

[yumaoka]

Investigating Java CI build failure.

Simple mistake. Fixed.