RFR: Fix javadoc generation and add check to testing suite [v2]

[Jorn Vernee]

On Thu, 28 Mar 2024 12:07:56 GMT, James Yuzawa <duke at openjdk.org> wrote:

>> Motivation: There is bad javadoc being generated. This fixes that and also adds a check to the testing suite to make sure it does not happen again.
>> 
>> Notes: I branched off of jdk22 branch since I would like such fixes to make their way into the jdk22 branch. Please let me know if there is a different base or head I should use.
>
> James Yuzawa has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fix javadoc generation and add check to testing suite
>   
>   Motivation: There is bad javadoc being generated. This fixes that and also adds a check to the testing suite to make sure it does not happen again.

FYI, when you're ready for this to be merged, just type `/integrate`

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PR Comment: https://git.openjdk.org/jextract/pull/227#issuecomment-2032306826