Minor improvement of frame helper (#101387)

* Minor improvement of frame helper

* Add new custom integration for testing

* Make IntegrationFrame kw_only

tests/testing_config/custom_components/test_integration_frame/__init__.py

@@ -0,0 +1,8 @@
+"""An integration which calls helpers.frame.get_integration_frame."""
+
+from homeassistant.helpers import frame
+
+
+def call_get_integration_frame() -> frame.IntegrationFrame:
+    """Call get_integration_frame."""
+    return frame.get_integration_frame()

tests/testing_config/custom_components/test_integration_frame/manifest.json

@@ -0,0 +1,9 @@
+{
+  "domain": "test_integration_frame",
+  "name": "Test Integration Frame",
+  "documentation": "http://example.com",
+  "requirements": [],
+  "dependencies": [],
+  "codeowners": [],
+  "version": "1.2.3"
+}