Fix custom component CLI unit tests

[freddyaboulton]

Description

Fix the unit tests for the custom component CLI.

🎯 PRs Should Target Issues

I accidentally deleted a couple of lines too many in my previous pr lol

Tests

1. PRs will only be merged if tests pass on CI. To run the tests locally, please set up your Gradio environment locally and run the tests: bash scripts/run_all_tests.sh

2. You may need to run the linters: bash scripts/format_backend.sh and bash scripts/format_frontend.sh

[gradio-pr-bot]

🪼 branch checks and previews

•	Name	Status	URL
	Spaces	ready!	Spaces preview
	Website	ready!	Website preview
🦄	Changes	detecting...

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Install Gradio from this PR

pip install https://gradio-pypi-previews.s3.amazonaws.com/7b7d7b92430f07296ae53b209ecb544b5ea16421/gradio-4.44.1-py3-none-any.whl

Install Gradio Python Client from this PR

pip install "gradio-client @ git+https://github.com/gradio-app/gradio@7b7d7b92430f07296ae53b209ecb544b5ea16421#subdirectory=client/python"

Install Gradio JS Client from this PR

npm install https://gradio-npm-previews.s3.amazonaws.com/7b7d7b92430f07296ae53b209ecb544b5ea16421/gradio-client-1.6.0-beta.3.tgz

Use Lite from this PR

<script type="module" src="https://gradio-lite-previews.s3.amazonaws.com/7b7d7b92430f07296ae53b209ecb544b5ea16421/dist/lite.js""></script>

[gradio-pr-bot]

🦄 change detected

This Pull Request includes changes to the following packages.

Package	Version
gradio	minor

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With the following changelog entry.

Fix custom component CLI unit tests

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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.

[abidlabs]

Thanks so much @freddyaboulton! Fixed a couple of other tests too, now backend unit tests should be completely green

[abidlabs]

I'll go ahead and merge this in so that we can apply this to other PRs, thanks @freddyaboulton!