RFR: 8359732: Make standard i/o encoding related system properties `StaticProperty` [v3]

[Roger Riggs]

On Wed, 18 Jun 2025 18:24:43 GMT, Naoto Sato <naoto 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()`.
>
> Naoto Sato has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Replaces a couple more

lgtm

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Marked as reviewed by rriggs (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/25860#pullrequestreview-2946358383