Restore query parameters in request

[aliabid94]

We lost query parameters in the request in upgrading to 4.0, because we were sending the queue information (session_hash, fn_index) via query params - now we send both URL params and queue information via request.url_params.
This does mean that when a user searches the request for url_params, there will be additional url_parameters they will find now in 4.0. I wanted to strip these but the fastapi.Request object is immutable and would be very messy / hacky to create a new object without these URL parameters. I think this is okay because users are usually looking for a specific key when searching url parameters.

Fixes: #6283

Try with

import gradio as gr

def echo(params):
    print(params)
    return params

def get_params(request: gr.Request):
  params = request.query_params
  ip = request.client.host
  return {"params": params, 
          "ip": ip}

  
with gr.Blocks() as demo:
  url_params = gr.State()
  text_in = gr.Textbox()
  text_out = gr.JSON()
  btn = gr.Button()
  btn.click(echo, inputs=[url_params], outputs=[text_out])
  demo.load(get_params, None, url_params, queue=True)
  #demo.load(get_params, None, url_params, queue=False)

demo.launch()

[gradio-pr-bot]

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---

The demo notebooks don't match the run.py files. Please run this command from the root of the repo and then commit the changes:

pip install nbformat && cd demo && python generate_notebooks.py

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Install Gradio from this PR

pip install https://gradio-builds.s3.amazonaws.com/b5dcbe6c78839336a1041520e3a0f7d83a2aefe5/gradio-4.1.1-py3-none-any.whl

Install Gradio Python Client from this PR

pip install "gradio-client @ git+https://github.com/gradio-app/gradio@b5dcbe6c78839336a1041520e3a0f7d83a2aefe5#subdirectory=client/python"

[gradio-pr-bot]

🦄 change detected

This Pull Request includes changes to the following packages.

Package	Version
@gradio/client	patch
gradio	patch

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Restore query parameters in request

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[abidlabs]

LGTM @aliabid94

[liquidcarbon]

this is currently not working:
TypeError: Type is not JSON serializable: QueryParams