Improve PR #37772 - inlineHelp Toggle Button control

[cyrez]

Improve Pull Request #37819 for Issue #37772

Summary of Changes

Following @nikosdion comment #35610 (comment) and #35610 (comment)

This PR removes the ability to set an attribute inlineHelp to the form field xml element.

I agree with @nikosdion on his statement, and so i have improved and simplified here my previous PR to only focus on fixing issue with hidden descriptions if no inlinehelp toggle button integrated.

Testing Instructions

Same as for previous PR #37819

• Check if descriptions are hidden by default in com_config and com_content options.
• Check if descriptions are shown by default everywhere else (where toggle button is not integrated) : component options, item edition, plugins manager... and in third-party extensions not integrating the toggle button.
• Toggle button works as expected in com_config and com_content

[Kostelano]

I have tested this item ✅ successfully on 12d9076

Everything still works well.

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[nikosdion]

I approve of this change. Having been the one asking for it I am not sure if it's proper for me to provide a test? If so, let me know and I will.

[conseilgouz]

I have tested this item ✅ successfully on 12d9076

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[alikon]

RTC

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[laoneo]

Thanks!