Remove progress animation on streaming

[aliabid94]

Fixes: #1494

Also improves UI when streaming from webcam. To test:

import gradio as gr

def iden(img):
    return img

with gr.Blocks() as demo:
    with gr.Row():
        input_img = gr.Image(sources=["webcam"])
        output_img = gr.Image()
        input_img.stream(lambda x:x, input_img, output_img)

if __name__ == "__main__":
    demo.launch(show_api=False) 

import gradio as gr

def iden(img):
    return img

with gr.Blocks() as demo:
    with gr.Row():
        input_img = gr.Audio(sources=["microphone"])
        output_img = gr.Audio()
        input_img.stream(lambda x:x, input_img, output_img)

if __name__ == "__main__":
    demo.launch(show_api=False) 

[gradio-pr-bot]

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---

Install Gradio from this PR

pip install https://gradio-builds.s3.amazonaws.com/c7ded7b1a1f2a2f97289e8dc70cd159010709db8/gradio-4.8.0-py3-none-any.whl

Install Gradio Python Client from this PR

pip install "gradio-client @ git+https://github.com/gradio-app/gradio@c7ded7b1a1f2a2f97289e8dc70cd159010709db8#subdirectory=client/python"

[gradio-pr-bot]

🦄 change detected

This Pull Request includes changes to the following packages.

Package	Version
@gradio/image	patch
@gradio/upload	patch
gradio	patch

• Maintainers can select this checkbox to manually select packages to update.

With the following changelog entry.

Remove progress animation on streaming

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• If the bot has failed to detect any changes, or if this pull request needs to update multiple packages to different versions or requires a more comprehensive changelog entry, maintainers can update the changelog file directly.

[hannahblair]

Tested and LGTM!

[abidlabs]

@nateraw will be happy we finally got around to this issue!