…8341)

closes #18274

This pull request makes system users visible in various group related
queries so that they can be added to and removed from groups. This
allows system user quotas to be configured. System users are still
ignored in certain queries, such as when license seat consumption is
determined.

This pull request further ensures the existence of a
"coder_prebuilt_workspaces" group in any organization that needs
prebuilt workspaces

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **New Features**
  * Organization and group member listings now include system users.
* **Bug Fixes**
* Updated tests to reflect the inclusion of system users in member and
group queries.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

… to groups (#19254)

This reverts commit b200fc8
(#18341).

…idebar_app_id (#19253)

This is a workaround for #18776

We avoid the foreign key issue by checking the previously inserted
workspace applications before calling UpdateWorkspaceAITask. Now,
affected workspaces will show as "not running an AI task" on the single
task view, which is technically correct.

We also insert a provisioner job log at WARN level to ensure that the
user sees some information that they have run into this issue, as well
as logging on the server side.

Longer term, we plan to modify how the workspace tasks view is
presented. This is a stopgap measure until we solidify that plan.

NOTE: this does **not** address the fact that stopping a workspace with
`has_ai_task: true` will result in the completed stop build no longer
having `has_ai_task: true`, resulting in tasks "disappearing" on stop.