fix(binders): valid html for show binder

[Maybach91]

A value for the hidden attribute is not allowed, so we don’t need to set it.

Current Behaviour:
rv-show="foobar will render style="display: none;" hidden="true"

Expected Behaviour for valid HTML:
rv-show="foobar will render style="display: none;" hidden

References:
https://html.spec.whatwg.org/multipage/interaction.html#the-hidden-attribute
https://html.spec.whatwg.org/multipage/common-microsyntaxes.html#boolean-attribute

Consider also adding/using aria-hidden values, but this would be a feature.

[Copilot]

Pull Request Overview

This PR ensures that the hidden attribute is rendered correctly as a boolean attribute (without a value) when rv-show is false.

• Remove use of "true" value on hidden attribute
• Use bare hidden presence for valid HTML

[Maybach91]

@JumpLink ↑

[JumpLink]

@Maybach91 Thank you, I will publish a new release for this :)

[JumpLink]

@Maybach91 I'm just waiting to see if #40 goes through.

[Maybach91]

Nice, thanks @JumpLink !