RFR: 8183348: Better cleanup for jdk/test/sun/security/pkcs12/P12SecretKey.java [v3]

[Rajan Halade]

On Thu, 1 May 2025 18:08:40 GMT, Mikhail Yankelevich <myankelevich at openjdk.org> wrote:

>> * Changed the test to use scratch directory
>> * Cleaned up the imports
>
> Mikhail Yankelevich has updated the pull request incrementally with one additional commit since the last revision:
> 
>   changed file format and throwing an exception in case of the failure

Marked as reviewed by rhalade (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/24718#pullrequestreview-2810375894