Adding maxlength attribute handling of textarea and input HTML element for the gr.TextBox() component via a max_length parameter

[WH-Yoshi]

Description

This PR aims to be able to modify the maximum number of characters to insert in a gr.TextBox().
To do this, a max_length parameter is added to the gr.TextBox() component.
This results in the modification of the svelte files for this component with the addition of a prop handler named max_length which will give its value to the HTML attribute maxlength responsible for the limit.

Closes: #9145

All tests have been run, some of them failed for unknown reasons or not caused by the modification of these last files.

[gradio-pr-bot]

🪼 branch checks and previews

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

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Install Gradio from this PR

pip install https://gradio-pypi-previews.s3.amazonaws.com/7e61de7189376dbc10042a791ae0025b8789f3ec/gradio-4.42.0-py3-none-any.whl

Install Gradio Python Client from this PR

pip install "gradio-client @ git+https://github.com/gradio-app/gradio@7e61de7189376dbc10042a791ae0025b8789f3ec#subdirectory=client/python"

Install Gradio JS Client from this PR

npm install https://gradio-npm-previews.s3.amazonaws.com/7e61de7189376dbc10042a791ae0025b8789f3ec/gradio-client-1.5.1.tgz

[gradio-pr-bot]

🦄 change detected

This Pull Request includes changes to the following packages.

Package	Version
@gradio/textbox	minor
gradio	minor

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

With the following changelog entry.

Adding maxlength attribute handling of textarea and input HTML element for the gr.TextBox() component via a max_length parameter

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[WH-Yoshi]

Thanks @abidlabs for the clues!

[abidlabs]

Hi @WH-Yoshi is there a reason you closed this PR?

[WH-Yoshi]

Hi yes, the tests are unsuccessful and I don't find the issue, so I wanted to make sure on my part before opening a PR maybe

[abidlabs]

You mind if I reopen and take a quick look?

[WH-Yoshi]

Sure, I'm a bit lost ngl

[abidlabs]

LGTM @WH-Yoshi, thanks for the nice PR! Just made a small addition to gradio/templates.py