RFR: 8361972: Clarify the condition of System.console() about standard input/output [v2]

[Justin Lu]

On Mon, 14 Jul 2025 22:39:56 GMT, Naoto Sato <naoto at openjdk.org> wrote:

>> This accompanies the fix for [JDK-8361613](https://bugs.openjdk.org/browse/JDK-8361613), which restricts `System.console()` to return a `Console` instance only when both standard input and output are connected to a terminal. The change here is solely a specification clarification and tightening of the `java.io.Console` javadoc to reflect this behavior. We are separating the spec clarification because the fix itself may be backported to prior LTS releases without requiring a Maintenance Review process.
>
> Naoto Sato has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Wording modification

New wording lgtm.

-------------

Marked as reviewed by jlu (Committer).

PR Review: https://git.openjdk.org/jdk/pull/26299#pullrequestreview-3018023504