[#2606] Lazy load synomyns for Elasticsearch

   - the synonyms need to be loaded after all the migrations
     have been run

src/open_inwoner/search/utils.py

@@ -1,19 +1,25 @@
 import logging
 
 from django.db.utils import DatabaseError
+from django.utils.functional import lazy
 
 from .models import Synonym
 
 logger = logging.getLogger(__name__)
 
 
 def load_synonyms() -> list:
-    """used for ES"""
-    # todo should be refactored to be run after django migrations
-    try:
-        synonyms = [s.synonym_line() for s in Synonym.objects.all()]
-    except DatabaseError as exc:
-        logger.warning(f"Synonyms for elasticsearch were not loaded: {exc}")
-        return []
-
-    return synonyms
+    """
+    Lazy load synonyms for Elasticsearch
+    """
+
+    def _load_synonyms():
+        try:
+            synonyms = [s.synonym_line() for s in Synonym.objects.all()]
+        except DatabaseError as exc:
+            logger.warning(f"Synonyms for elasticsearch were not loaded: {exc}")
+            return []
+
+        return synonyms
+
+    return lazy(_load_synonyms)