fix: Restore copyright header and add negative test case for page_size interpolation

Co-Authored-By: [email protected] <[email protected]>

Author: devin-ai-integration[bot]

airbyte_cdk/sources/declarative/models/declarative_component_schema.py

@@ -1,3 +1,5 @@
+# Copyright (c) 2025 Airbyte, Inc., all rights reserved.
+
 # generated by datamodel-codegen:
 #   filename:  declarative_component_schema.yaml
 

unit_tests/sources/declarative/requesters/paginators/test_cursor_pagination_strategy.py

@@ -141,3 +141,15 @@ def test_interpolated_page_size(page_size_input, config, expected_page_size):
         parameters={},
     )
     assert strategy.get_page_size() == expected_page_size
+
+
+def test_interpolated_page_size_raises_on_non_integer():
+    """Test that get_page_size raises an exception when interpolation resolves to a non-integer."""
+    strategy = CursorPaginationStrategy(
+        page_size="{{ config['page_size'] }}",
+        cursor_value="token",
+        config={"page_size": "invalid"},
+        parameters={},
+    )
+    with pytest.raises(Exception, match="is of type .* Expected"):
+        strategy.get_page_size()