RFR: 8359732: Make standard i/o encoding related system properties `StaticProperty`

[Roger Riggs]

On Wed, 18 Jun 2025 07:50:31 GMT, Alan Bateman <alanb at openjdk.org> wrote:

>> Refactored the internal handling of `stdin/out/err.encoding` to allow setting them only via command-line options by converting them into `StaticProperty`. This change prevents unexpected behavior caused by applications modifying these properties at runtime using `System.setProperty()`.
>
> src/java.base/share/classes/module-info.java line 287:
> 
>> 285:         jdk.jpackage,
>> 286:         jdk.jshell,
>> 287:         jdk.net;
> 
> At some point we will need to re-visit all these qualified exports so that java.base exports as few of these internal packages as possible.

The original intent of StaticProperties was to limit it to the base module.
Other modules are free to read the property themselves.

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PR Review Comment: https://git.openjdk.org/jdk/pull/25860#discussion_r2154852609