RFR: JDK-8331646: Add specific regression leap year tests (Task - P4) [v2]

[serhiysachkov]

On Tue, 7 May 2024 16:43:11 GMT, Naoto Sato <naoto at openjdk.org> wrote:

> Sorry if I was unclear, but I meant to consolidate the test methods, as they are duplicates other than the calendar values. Those values should be parametrized and consolidate the test body into a single method.

sorry for misunderstanding, I was trying to provide scenarios that are easy to follow and understand for devs, but you are right we don't need duplication there.

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PR Comment: https://git.openjdk.org/jdk/pull/19082#issuecomment-2100383313