Check for form attribute before rendering role matrix

[wluijt-endertech]

Subject

I am targeting this branch, because it appears that a recent change in the same branch might need additional logic.

Closes #1552.

Changelog

### Fixed
- Fix user edit page to check for a form attribute before rendering the role matrix.

[VincentLanglet]

Shouldnt the whole li be hidden if the form is not defined ?

(Also are you able to add a functionnal test for this bug ?)

[wluijt-endertech]

I updated the code to surround the <li> element. I think it will take me some time to properly setup for creating tests. I don't know if you should wait on me for that though.

[VincentLanglet]

I wont be able to patch this before sunday/monday anyway since I currently doesnt have a computer.

[wluijt-endertech]

No worries. I was able to add an initial functional test.

[VincentLanglet]

@wluijt-endertech Can you take a look at the psalm and phpstan failures.
I assume you have to ignore some error (with the baseline and a comment, or with a phpstan-ignore, psalm-suppress) because you added compatiblity with old symfony version and tools only checks with the latest.

[wluijt-endertech]

I added the phpstan-ignore and psalm-suppress comments.

[jordisala1991]

do this if need to be updated too? what happens If I exclude a role for which I have is_granted = false. It will try to print a script that will fail because there is no form, right?

Maybe something like:

    {% if attributes.form is defined %}
        <li>{{ form_widget(attributes.form, {label: attributes.role_translated, value: attributes.role}) }}</li>
        {% if not attributes.is_granted %}
            <script>
                $('input[value="{{ role }}"]').iCheck('disable');
                $('form').on('submit', function() {
                    $('input[value="{{ role }}"]').iCheck('enable');
                });
            </script>
        {% endif %}
    {% endif %}

[wluijt-endertech]

I updated the template to surround the content with the form attribute check (with a minimal change, though).

[jordisala1991]

Thanks @wluijt-endertech