Translate service validation errors (#115024)

* Move service validation error message to translation cache

* Fix test

* Revert unrelated change

* Address review comments

* Improve error message

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Co-authored-by: J. Nick Koston <nick@koston.org>

tests/components/websocket_api/test_commands.py

@@ -204,7 +204,7 @@ async def test_return_response_error(hass: HomeAssistant, websocket_client) -> N
     assert msg["id"] == 8
     assert msg["type"] == const.TYPE_RESULT
     assert not msg["success"]
-    assert msg["error"]["code"] == "unknown_error"
+    assert msg["error"]["code"] == "service_validation_error"
 
 
 @pytest.mark.parametrize("command", ["call_service", "call_service_action"])