Fixes (#19125)

* fix embeddings reindex

- always increment processed objects to prevent division by zero
- ensure description still gets processed even if there is no thumbnail

* clean up

* Add newer labels to default attribute map

---------

Co-authored-by: Nicolas Mowen <nickmowen213@gmail.com>

frigate/const.py

@@ -26,6 +26,7 @@ DEFAULT_ATTRIBUTE_LABEL_MAP = {
     "car": [
         "amazon",
         "an_post",
+        "canada_post",
         "dhl",
         "dpd",
         "fedex",
@@ -35,6 +36,7 @@ DEFAULT_ATTRIBUTE_LABEL_MAP = {
         "postnl",
         "postnord",
         "purolator",
+        "royal_mail",
         "ups",
         "usps",
     ],