Fix incorrect open issue count in project sidebar

What does this MR do and why?

The new issue list includes all issue types so the open issue count query should also include all issue types

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Related to #292473 (closed)