RFR: 2255: Keep additional issue marker updated

[Zhao Song]

On Thu, 9 May 2024 18:09:54 GMT, Zhao Song <zsong at openjdk.org> wrote:

> Currently, additional issue marker is not updated automatically, it means if user changed the title of an additional issue in JBS, the user will need to issue `/issue` command again to update the additional issue. However, for additional issues, users are not aware that skara bot would store the issue title in a hidden marker.  To avoid confusion, we'd better let skara bot update the hidden marker automatically when user changes the issue title in JBS.

Thanks for the review!

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PR Comment: https://git.openjdk.org/skara/pull/1649#issuecomment-2103243113