Fix reclaiming unbuilt units not giving back resources

[lL1l1]

Description of the proposed changes

Fixes a bug reported on discord. Caused by 97cb6ecfab.

Testing done on the proposed changes

Partially building a unit and reclaiming it returns all the resources used.

Checklist

• [x] Changes are annotated, including comments where useful
• [x] Changes are documented in the changelog for the next game version

[Garanas]

Definitely my mistake, poor refactor there 😞