Update types and specify details

Author: lazebnyi

airbyte_cdk/sources/declarative/declarative_component_schema.yaml

@@ -4052,6 +4052,8 @@ definitions:
         title: Default Values
         description: placeholder
         type: array
+        items:
+          type: object
       $parameters:
         type: object
         additionalProperties: true

airbyte_cdk/sources/declarative/models/declarative_component_schema.py

@@ -1498,7 +1498,7 @@ class StreamConfig(BaseModel):
         examples=[["data"], ["data", "streams"], ["data", "{{ parameters.name }}"]],
         title="Configs Pointer",
     )
-    default_values: Optional[List] = Field(
+    default_values: Optional[List[Dict[str, Any]]] = Field(
         None, description="placeholder", title="Default Values"
     )
     parameters: Optional[Dict[str, Any]] = Field(None, alias="$parameters")

airbyte_cdk/sources/declarative/resolvers/config_components_resolver.py

@@ -109,7 +109,7 @@ def prepare_streams():
                 stream_configs = dpath.get(dict(self.config), path, default=[])
                 stream_configs = normalize_configs(stream_configs)
                 if stream_config.default_values:
-                    stream_configs += stream_config.default_values
+                    stream_configs.extend(stream_config.default_values)
                 yield [(i, item) for i, item in enumerate(stream_configs)]
 
         def merge_combination(combo):