community[patch]: improve test setup to accurately test filtering of labels in neo4j (#22531)

**Description:** This PR addresses an issue with an existing test that
was not effectively testing the intended functionality. The previous
test setup did not adequately validate the filtering of the labels in
neo4j, because the nodes and relationship in the test data did not have
any properties set. Without properties these labels would not have been
returned, regardless of the filtering.

---------

Co-authored-by: Oskar Hane <oh@oskarhane.com>

libs/community/tests/integration_tests/graphs/test_neo4j.py

@@ -266,12 +266,17 @@ def test_neo4j_filtering_labels() -> None:
     # Remove all constraints
     graph.query("CALL apoc.schema.assert({}, {})")
     graph.query(
-        "CREATE (:`_Bloom_Scene_`)-[:_Bloom_HAS_SCENE_]->(:`_Bloom_Perspective_`)"
+        """
+        CREATE (:_Bloom_Scene_ {property_a: 'a'})
+        -[:_Bloom_HAS_SCENE_ {property_b: 'b'}]
+        ->(:_Bloom_Perspective_)
+        """
     )
     graph.refresh_schema()
 
-    # Assert both are empty
+    # Assert all are empty
     assert graph.structured_schema["node_props"] == {}
+    assert graph.structured_schema["rel_props"] == {}
     assert graph.structured_schema["relationships"] == []