RFR: 8358530: Properties#list should warn against non-String values [v3]

[Justin Lu]

On Thu, 17 Jul 2025 15:32:32 GMT, cagliostro92 <duke at openjdk.org> wrote:

>> Trivial PR to enhance Javadoc for the `Properties#list` method, which has cost me some debugging time.
>
> cagliostro92 has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8358530: adds oxford comma

Thanks @cagliostro92 for the changes and @liach for reviewing.

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Marked as reviewed by jlu (Committer).

PR Review: https://git.openjdk.org/jdk/pull/25334#pullrequestreview-3048206253