fix(portaswitch): handle dict and list inputs in custom contacts validator

Author: yakimenko73

app/bss/adapters/portaswitch/config.py

@@ -71,6 +71,14 @@ def decode_contacts_custom(cls, v: Union[List, str]) -> List[dict]:
         if v is None or (isinstance(v, list) and len(v) == 0):
             return []
 
+        # If it's already a list of dicts, return it as-is
+        if isinstance(v, list) and all(isinstance(item, dict) for item in v):
+            return v
+
+        # If it's a single dict, wrap it in a list
+        if isinstance(v, dict):
+            return [v]
+
         v = str(v)
 
         if not v or not v.strip():