Fix issues related to set_props() in WebSocket callbacks

[CNFeffery]

• Fix the error when updating the Patch object using set_props() in the websocket callback. Closes [BUG] 4.2.0rc1 websocket callback can't set_props() with Patch value #3758
• Fix the error when using set_props() to update component-type properties in the websocket callback.

[CNFeffery]

Based on the functional demonstration results of the local development version Dash, simulate the streaming content output effect similar to large language models:

Core callback function code:

@app.callback(
    Input("load-stream-content", "nClicks"),
    websocket=True,
    running=[[Output("load-stream-content", "loading"), True, False]],
)
async def load_stream_content(nClicks):

    for s in test_markdown:
        await asyncio.sleep(0.02)

        p = Patch()
        p += s

        set_props("markdown-content", {"markdownStr": p})

[T4rk1n]

To get the full compatibility, it should to_json without condition, this ensure we can get all the supported prop types.
But then this extra loads might be expansive when serializing big object. Maybe instead of _send_json we have _send_plotly_json implemented in base that calls a regular _send(value: str).