hotfix: initiatives menu item not visible to users without UserManagement permission (#1088)

The "Initiatives" item in the Management section of the side navigation
was never visible to users who had the `Initiatives` permission but not
the `UserManagement` permission (e.g. CMPSM, CSO, CPM roles).
 
This was caused by conditional logic in `AsyncMenuService`. The
`menuItems.Add(management)` call, which adds the Management section to
the nav, was placed inside the `UserManagement` policy block. The
`Initiatives` policy check sat outside that block (at the`Internal`
level), but since the `management` object had never been added to
`menuItems`, any items appended to it were silently discarded.

## PR Type
- [ ] Feature
- [x] Hotfix
- [ ] Release
- [ ] Documentation

---

## Checklist
- [x] Code builds locally
- [x] Tests added or updated
- [x] CI is green
- [ ] Peer review completed

---

### UAT
- [x] Required → completed
- [ ] Not required (explain below)

Author: carlsixsmith-moj

src/Server.UI/Services/Navigation/AsyncMenuService.cs

@@ -122,7 +122,6 @@ public async Task<IEnumerable<MenuSectionModel>> GetFeaturesAsync(ClaimsPrincipa
                     });
                 }
 
-                menuItems.Add(management);
             }
 
             if(await PassesPolicy(principal, SecurityPolicies.Initiatives))
@@ -137,6 +136,11 @@ public async Task<IEnumerable<MenuSectionModel>> GetFeaturesAsync(ClaimsPrincipa
                 });
             }
 
+            if(management.SectionItems.Any())
+            {
+                menuItems.Add(management);
+            }
+
         }
 
         return menuItems;