Add attributes to UI filters list (#23250)

* preserve user-set min_score on attribute filters instead of bumping any 0.5 value

use model_fields_set to distinguish "user explicitly set min_score" from "Pydantic applied the generic FilterConfig default of 0.5"

* add config test for attributes

* fix attributes frontend type

* add expanded hidden field context

* extend schema modification

* special case for attributes

* i18n for attributes

* handle dedicated lpr mode

* strip unrendered FilterConfig fields from attribute filter form data to fix validation errors

frigate/config/config.py

@@ -629,10 +629,11 @@ class FrigateConfig(FrigateBaseModel):
 
         # set default min_score for object attributes
         for attribute in self.model.all_attributes:
-            if not self.objects.filters.get(attribute):
+            existing = self.objects.filters.get(attribute)
+            if existing is None:
                 self.objects.filters[attribute] = FilterConfig(min_score=0.7)
-            elif self.objects.filters[attribute].min_score == 0.5:
-                self.objects.filters[attribute].min_score = 0.7
+            elif "min_score" not in existing.model_fields_set:
+                existing.min_score = 0.7
 
         # auto detect hwaccel args
         if self.ffmpeg.hwaccel_args == "auto":