fix: Accept inputs for the URL component (#12474)

* fix: Accept inputs for the URL component

* [autofix.ci] apply automated fixes

* Update src/lfx/tests/unit/components/data_source/test_url_component.py

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* rebuild comp index

* Update component_index.json

* [autofix.ci] apply automated fixes

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: 3 people

src/backend/base/langflow/initial_setup/starter_projects/Blog Writer.json

@@ -64,7 +64,7 @@ class URLComponent(Component):
             tool_mode=True,
             placeholder="Enter a URL...",
             list_add_label="Add URL",
-            input_types=[],
+            input_types=["Message"],
         ),
         SliderInput(
             name="max_depth",

src/backend/base/langflow/initial_setup/starter_projects/Custom Component Generator.json

@@ -0,0 +1,35 @@
+"""Tests for URLComponent input type configuration."""
+
+import sys
+from unittest.mock import MagicMock
+
+import pytest
+
+
+@pytest.fixture
+def url_component(monkeypatch):
+    """Import URLComponent with heavy third-party modules stubbed for this test."""
+    for mod in (
+        "langchain_community",
+        "langchain_community.document_loaders",
+        "markitdown",
+        "bs4",
+        "lxml",
+    ):
+        monkeypatch.setitem(sys.modules, mod, MagicMock())
+
+    from lfx.components.data_source.url import URLComponent
+
+    return URLComponent
+
+
+class TestURLComponentInputTypes:
+    """Verify the urls input accepts Message as an input type."""
+
+    def test_urls_input_accepts_message_type(self, url_component):
+        urls_input = next(inp for inp in url_component.inputs if inp.name == "urls")
+        assert "Message" in urls_input.input_types
+
+    def test_urls_input_is_list(self, url_component):
+        urls_input = next(inp for inp in url_component.inputs if inp.name == "urls")
+        assert urls_input.is_list is True