RFR: 8332008: Enable issuestitle check

[Zhao Song]

On Thu, 9 May 2024 20:53:59 GMT, Zhao Song <zsong at openjdk.org> wrote:

> As requested in [SKARA-2170](https://bugs.openjdk.org/browse/SKARA-2170) and [SKARA-2248](https://bugs.openjdk.org/browse/SKARA-2248), now Skara bot is able to warn on trailing periods or leading lowercase letter in issue titles.
> I am going to update the jcheck configuration to configure issuestitle check as a warning. Given that it's just a warning, it wouldn't block integration.

Thank you for the review!

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PR Comment: https://git.openjdk.org/jdk/pull/19161#issuecomment-2103553031