Form does not work when defined in pages that redirects

I know this is an edge usecase:
```
/map
/restaurants -> /map (redirect)
/restaurants/pizza
/restaurants/hamburger
```

I want to define **one global form** that gets reused in every subpage using:
```
{% include "forms/form.html.twig" with { form: forms('restaurant_contact') } %}
```

I've set `action` to `#contact`, so the form redirects to the page itself rather than the page where the form got defined. This all works well unless the page where the form is defined redirects to another page using `redirect: '/map[307]'`. The browser shown a redirection error. Not sure if this is intended, but I need to place the form to any other page now.

Is there a way to define a form in twig maybe, or at least in some yaml file that gets loaded instead of adding the form to a page?

No source file or test is named in the issue. Start by tracing how forms/form.html.twig resolves forms and how the page redirect configuration is handled; the work is done when a form defined for a redirecting page can be reused on another page without a browser redirection error.

Written by the indexing model from the issue text.