Send localization info on websocket_api script errors (#104638)

* Send localization info on script errors

* Use connection exception hander

* Keep HomeAssistantError is unknown_error

* Move specific exception handling

tests/components/websocket_api/test_commands.py

@@ -2317,6 +2317,65 @@ async def test_execute_script(
     assert call.context.as_dict() == msg_var["result"]["context"]
 
 
+@pytest.mark.parametrize(
+    ("raise_exception", "err_code"),
+    [
+        (
+            HomeAssistantError(
+                "Some error",
+                translation_domain="test",
+                translation_key="test_error",
+                translation_placeholders={"option": "bla"},
+            ),
+            "unknown_error",
+        ),
+        (
+            ServiceValidationError(
+                "Some error",
+                translation_domain="test",
+                translation_key="test_error",
+                translation_placeholders={"option": "bla"},
+            ),
+            "service_validation_error",
+        ),
+    ],
+)
+async def test_execute_script_err_localization(
+    hass: HomeAssistant,
+    websocket_client: MockHAClientWebSocket,
+    raise_exception: HomeAssistantError,
+    err_code: str,
+) -> None:
+    """Test testing a condition."""
+    async_mock_service(
+        hass, "domain_test", "test_service", raise_exception=raise_exception
+    )
+
+    await websocket_client.send_json(
+        {
+            "id": 5,
+            "type": "execute_script",
+            "sequence": [
+                {
+                    "service": "domain_test.test_service",
+                    "data": {"hello": "world"},
+                },
+                {"stop": "done", "response_variable": "service_result"},
+            ],
+        }
+    )
+
+    msg = await websocket_client.receive_json()
+    assert msg["id"] == 5
+    assert msg["type"] == const.TYPE_RESULT
+    assert msg["success"] is False
+    assert msg["error"]["code"] == err_code
+    assert msg["error"]["message"] == "Some error"
+    assert msg["error"]["translation_key"] == "test_error"
+    assert msg["error"]["translation_domain"] == "test"
+    assert msg["error"]["translation_placeholders"] == {"option": "bla"}
+
+
 async def test_execute_script_complex_response(
     hass: HomeAssistant, hass_ws_client: WebSocketGenerator
 ) -> None: