Allow config to include non-pickle-able values

[abidlabs]

Closes: #7412

As part of the recent changes around root, I added a step which deep-copied the config. This prevented the config from including any objects that could not be pickled. I've refactored the code so that we do not need to deepcopy the config any more. As an added bonus, this should mostly eliminate the performance issues caused by #7374

Simple repro:

import gradio as gr

my_dict = {'a': 1, 'b': 2, 'c': 3}

with gr.Blocks() as demo:
    j = gr.JSON(my_dict.keys())
    
demo.launch()

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Install Gradio from this PR

pip install https://gradio-builds.s3.amazonaws.com/5301c417716020bf57c52beefc48de10c4254993/gradio-4.18.0-py3-none-any.whl

Install Gradio Python Client from this PR

pip install "gradio-client @ git+https://github.com/gradio-app/gradio@5301c417716020bf57c52beefc48de10c4254993#subdirectory=client/python"

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Allow config to include non-pickle-able values

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[abidlabs]

The main change in this PR being that we no longer need to traverse the config if the root has not change

[freddyaboulton]

I think it would be worth abstracting this into a helper function with docstring explaining the logix even though it's only used in two places to make the code more "documentable". Nit though.

[abidlabs]

Can do

[abidlabs]

Thanks @freddyaboulton for the review! I've made the suggested changes and am putting this on auto-merge