Allow comments within components / function calls

[tacman]

It is so natural to comment out HTML attributes that it's easy to think that Twig supports this. So easy that even the Symfony UX documentation has an example.

// ...

<div class="toggle-password-container"> // Add "toggle-password-container" or a class that applies position: relative to this container.
    <label for="password">Password</label>
    <input
        id="password"
        name="password"
        type="password"
        {{ stimulus_controller('symfony/ux-toggle-password/toggle-password', {
                {# visibleLabel: 'Show password', // If you want to modify this label. #}
                {# visibleIcon: 'Some svg icon', // If you want to modify this icon. #}
                {# hiddenLabel: 'Hide password', // If you want to modify this label. #}
                {# hiddenIcon: 'Some svg icon', // If you want to modify this icon. #}
                buttonClasses: ['toggle-password-button'], // Add as many classes as you wish. "toggle-password-button" is needed to activate the default CSS.
        }) }}
    >
</div>

// ...

https://symfony.com/bundles/ux-toggle-password/current/index.html#usage-without-symfony-forms

I started to make a PR to fix the docs, but it's not easy to decide where to move it. It'd be awesome if twig allowed this, as I frequently use it for in-line comments as well as disabling attributes.