{% include %} with the template instance is broken under django 1.11

[Mikhail Podgurskiy]

As stated in the django docs, the {% include %} tag could accept a template instance to render - ​https://docs.djangoproject.com/en/1.10/ref/templates/builtins/#include

include

Loads a template and renders it with the current context. This is a way of “including” other templates within a template.

The variable may also be any object with a render() method that accepts a context. This allows you to reference a compiled Template in your context.

This leads to RequestContext from the main template been passed to the included template.render method and this became prohibited within https://code.djangoproject.com/ticket/27258 changeset

TypeError at ...
context must be a dict rather than RequestContext.

[Tim Graham]

Duplicate of #27722 which already has discussion.