A project can contain issues from other owners, but returned items do not include `.content.owner.login`

[gr2m]

Please avoid duplicates

• [x] I checked all open bugs and none of them matched my problem.

Reproducible test case

No response

Please select the environment(s) that are relevant to your bug report

• [ ] Browsers
• [ ] Node
• [ ] Deno

Versions

n/a

What happened?

Today I learned that an issue that was added to a project might belong to a different owner than the project. Given that is possible, we should load the owner login of items by default.

Would you be interested in contributing a fix?

• [ ] yes