Fix dynamic declarative stream schema

Author: lazebnyi

airbyte_cdk/sources/declarative/declarative_component_schema.yaml

@@ -2783,6 +2783,9 @@ definitions:
     type: object
     description: A component that described how will be created declarative streams based on stream template. (This component is experimental. Use at your own risk.)
     properties:
+      type:
+        type: string
+        enum: [ DynamicDeclarativeStream ]
       stream_template:
         title: Stream Template
         description: Reference to the stream template.
@@ -2792,6 +2795,7 @@ definitions:
         description: Component resolve and populates stream templates with components values.
         "$ref": "#/definitions/HttpComponentsResolver"
     required:
+      - type
       - stream_template
       - components_resolver
 interpolation:

airbyte_cdk/sources/declarative/models/declarative_component_schema.py

@@ -1838,6 +1838,7 @@ class HttpComponentsResolver(BaseModel):
 
 
 class DynamicDeclarativeStream(BaseModel):
+    type: Literal["DynamicDeclarativeStream"]
     stream_template: DeclarativeStream = Field(
         ..., description="Reference to the stream template.", title="Stream Template"
     )