[core] Merge set_name + set_entity_strings into configure_entity_ (#14444)

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

tests/component_tests/binary_sensor/test_binary_sensor.py

@@ -29,7 +29,7 @@ def test_binary_sensor_sets_mandatory_fields(generate_main):
     )
 
     # Then
-    assert 'bs_1->set_name("test bs1",' in main_cpp
+    assert 'bs_1->configure_entity_("test bs1",' in main_cpp
     assert "bs_1->set_pin(" in main_cpp