RFR: 8343780: Add since checker tests to the Tools area modules and add missing @since to jdk.jfr [v4]

[Nizar Benalla]

On Fri, 29 Nov 2024 18:53:52 GMT, Nizar Benalla <nbenalla at openjdk.org> wrote:

>> Can I please get a review for this PR that add tests to verify the value of `@since` tags to the Tools area modules. The test is described in this [email](https://mail.openjdk.org/pipermail/jdk-dev/2024-October/009474.html). This issue is similar to JDK-8341399, JDK-8331051 and JDK-8343442.
>> 
>> The benefit from this is helping API authors and reviewer validate the accuracy of `@since` in their source code (and subsequently, in the generated documentation). And lessen the burden on Reviewers.
>> 
>> The test has been added for `java.base` and a few other modules and has helped catch some bugs before they make it to the JDK.
>> 
>> Notes: 
>> - I have also added an `@since` tag that was missing.
>> - You will notice there is no test for the `jdk.jfr` module, it will be added in a future PR because it requires special handling. (JFR used to be a commercial feature and this requires special handling to be added for it in the test)
>> 
>> TIA
>
> Nizar Benalla has updated the pull request incrementally with one additional commit since the last revision:
> 
>   add a missing \@since tag to RecordingStream.onMetadata

Reverting the change to `RecordingStream`, as [JDK-8345339](https://bugs.openjdk.org/browse/JDK-8345339) will filed.

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PR Comment: https://git.openjdk.org/jdk/pull/21982#issuecomment-2513176418