RFR: 8343316: Review and update tests using explicit provider names

[Hai-May Chao]

On Wed, 12 Nov 2025 17:58:51 GMT, Matthew Donovan <mdonovan at openjdk.org> wrote:

> In this PR, I updated a few crypto tests to remove the hard-coded provider name and use the `test.provider.name` property instead. These tests were missed while working on [JDK-8341927](https://bugs.openjdk.org/browse/JDK-8341927).

test/jdk/com/sun/crypto/provider/KeyAgreement/DHGenSharedSecret.java line 61:

> 59:         KeyPairGenerator keyGen =
> 60:             KeyPairGenerator.getInstance("DH",
> 61:                     System.getProperty("test.provider.name", "SunJCE"));

You may consider defining a final string `PROVIDER_NAME` used by this class like the other changed files.

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PR Review Comment: https://git.openjdk.org/jdk/pull/28273#discussion_r2528462927