Upgrade Status does not check if there were outstanding DB updates

This is where the code lies to check it https://git.drupalcode.org/project/drupal/-/blob/11.x/core/modules/syste... we should see if we can reuse this by invoking it instead of copying it.

I'm working on this.

Please review the MR, thanks.

Gábor Hojtsy → changed the visibility of the branch 3420355-upgrade-status-does to hidden.

Thanks for working on this. I think the more we can reuse rather than copying it to our own would be better. Reviewing system_requirements(), there are various useful things it checks for that could affect upgrades, eg. module installed that is already not compatible with current version of core, missing module installed, entity updates missing, etc. These are beyond the database updates missing. So I think we may be better off with running the system requirements check and reporting if there were ANY errors from there. That would not be that specific about database updates, but it would help surface system issues.

Made an untested proposal, manual testing is welcome. Not sure how can we automatically test this. (We don't really have tests for the requirements checks unfortunately).

Nice, it makes sense! Tested it and noticed an error related to the system_requirements() function, so I've pushed a fix for it. Can you review please? Thanks.