Fixes hot reload socket tests

[elliotBraem]

Although hot reload tests were passing, they mocked data incorrectly and so did not reflect the actual implementation. This is fixed now.

Data received from socket server is:

{
    "components": {
        "quickstart.near/widget/deeply.nested.home": {
            "code": "return <p>Hello world</p>;\n"
        },
    },
    "data": {}
}