fix(dashboard): stabilize result tables and fns filters

src/apps/parsers/views.py

@@ -840,12 +840,24 @@ class FinancialReportViewSet(ReadOnlyModelViewSet):
         "ogrn",
         "external_id",
         "status",
-        "source",
         "load_batch",
         "registry_organization",
     ]
     search_fields = ["ogrn", "external_id", "file_name"]
 
+    def get_queryset(self):
+        queryset = super().get_queryset()
+        source_value = self.request.query_params.get("source", "").strip()
+        if not source_value or source_value in {
+            "fns_reports",
+            "fns_financial",
+            "financial-indicators",
+        }:
+            return queryset
+        if source_value in FinancialReport.SourceType.values:
+            return queryset.filter(source=source_value)
+        return queryset.none()
+
     def get_serializer_class(self):
         if self.action == "retrieve":
             return FinancialReportDetailSerializer