RFR: 8373538: Migrate all tests to null-safe "SimpleSSLContext" methods [v2]

[Daniel Jeliński]

On Fri, 19 Dec 2025 17:37:23 GMT, Volkan Yazici <vyazici at openjdk.org> wrote:

>> 1. [JDK-8372661] introduced null-safe static factory methods to `SimpleSSLContext`
>> 2. [JDK-8373515] migrated `test/jdk/java/net/httpclient/` to these new methods
>> 3. [JDK-8373537] migrated `test/jdk/com/sun/net/httpserver/` to these new methods
>> 4. This PR migrates all remaining `SimpleSSLContext` usages, *and* removes nullable `SimpleSSLContext` factory methods
>> 
>> [JDK-8372661]: https://bugs.openjdk.org/browse/JDK-8372661
>> [JDK-8373515]: https://bugs.openjdk.org/browse/JDK-8373515
>> [JDK-8373537]: https://bugs.openjdk.org/browse/JDK-8373537
>
> Volkan Yazici has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Remove wildcard imports

Marked as reviewed by djelinski (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/28905#pullrequestreview-3633935001