Return icon in in-house app metadata (#35568)

**Related issue:** Resolves #35559 

# Checklist for submitter

If some of the following don't apply, delete the relevant line.

## Testing

- [x] Added/updated automated tests
- [ ] Where appropriate, [automated tests simulate multiple hosts and
test for host
isolation](https://github.com/fleetdm/fleet/blob/main/docs/Contributing/reference/patterns-backend.md#unit-testing)
(updates to one hosts's records do not affect another)

- [x] QA'd all new/changed functionality manually

server/datastore/mysql/in_house_apps.go

@@ -11,6 +11,7 @@ import (
 	"github.com/fleetdm/fleet/v4/server/contexts/ctxerr"
 	"github.com/fleetdm/fleet/v4/server/fleet"
 	"github.com/fleetdm/fleet/v4/server/mdm/nanomdm/mdm"
+	"github.com/fleetdm/fleet/v4/server/ptr"
 	"github.com/go-kit/log/level"
 	"github.com/jmoiron/sqlx"
 )
@@ -247,6 +248,16 @@ WHERE
 		dest.Categories = categories
 	}
 
+	if teamID != nil {
+		icon, err := ds.GetSoftwareTitleIcon(ctx, *teamID, titleID)
+		if err != nil && !fleet.IsNotFound(err) {
+			return nil, ctxerr.Wrap(ctx, err, "get software title icon")
+		}
+		if icon != nil {
+			dest.IconUrl = ptr.String(icon.IconUrl())
+		}
+	}
+
 	return &dest, nil
 }
 

server/datastore/mysql/software_title_icons_test.go

@@ -775,7 +775,6 @@ func testDeleteIconsAssociatedWithTitlesWithoutInstallers(t *testing.T, ds *Data
 				require.NoError(t, err)
 				require.Len(t, softwareInstallerTitleIds, 2) // iha create 2 titles
 				require.Equal(t, titleID, softwareInstallerTitleIds[1].ID)
-
 				_, err = ds.CreateOrUpdateSoftwareTitleIcon(ctx, &fleet.UploadSoftwareTitleIconPayload{
 					TeamID:    team.ID,
 					TitleID:   titleID,
@@ -784,6 +783,10 @@ func testDeleteIconsAssociatedWithTitlesWithoutInstallers(t *testing.T, ds *Data
 				})
 				require.NoError(t, err)
 
+				meta, err := ds.GetInHouseAppMetadataByTeamAndTitleID(ctx, &team.ID, titleID)
+				require.NoError(t, err)
+				require.NotEmpty(t, meta.IconUrl)
+
 				result, err := ds.writer(ctx).ExecContext(ctx, `
 					INSERT INTO software_titles (name, source, bundle_identifier) VALUES (?, ?, ?)
 				`, "foo2", "ios_apps", "foo2.bundle.id")