Patch scout uploads (#3867)

#### Added
- Declare None instead of empty custom images

cg/meta/upload/scout/raredisease_config_builder.py

@@ -6,9 +6,9 @@
 from cg.apps.madeline.api import MadelineAPI
 from cg.constants.housekeeper_tags import HK_DELIVERY_REPORT_TAG
 from cg.constants.scout import (
-    GenomeBuild,
     RAREDISEASE_CASE_TAGS,
     RAREDISEASE_SAMPLE_TAGS,
+    GenomeBuild,
     UploadTrack,
 )
 from cg.meta.upload.scout.hk_tags import CaseTags, SampleTags

cg/models/scout/scout_load_config.py

@@ -4,6 +4,7 @@
 
 from pydantic import BaseModel, BeforeValidator, ConfigDict
 from typing_extensions import Annotated, Literal
+
 from cg.constants.scout import UploadTrack
 from cg.models.scout.validators import field_not_none
 
@@ -118,7 +119,7 @@ class ScoutLoadConfig(BaseModel):
     sv_rank_model_version: str | None = None
     analysis_date: datetime | None = None
     samples: list[ScoutIndividual] = []
-    custom_images: CustomImages = CustomImages()
+    customer_images: CustomImages | None = None
     delivery_report: str | None = None
     coverage_qc_report: str | None = None
     cnv_report: str | None = None