RFR: 8285150: Improve tab completion for annotations [v5]

[Chen Liang]

On Tue, 9 Sep 2025 05:41:26 GMT, Jan Lahoda <jlahoda at openjdk.org> wrote:

>> When using types code like:
>> 
>> @Deprecated(
>> 
>> 
>> and presses `<tab>`, there should be a sensible completion, but currently there is nothing. This PR proposes to add code completion for annotation attributes.
>
> Jan Lahoda has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Adding Test annotation

Though I don't really understand jshell, I find the code mostly good in terms of style. I don't know if you want other reviewers like Adam to check.

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

Marked as reviewed by liach (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/22840#pullrequestreview-3202009266