[FEATURE] Optional self closing block

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• I've searched the issues
• I've read the docs

Django component introduces a few blocks that it uses for control - component, slot, and fill. These tags can be self closing:
https://django-components.github.io/django-components/latest/concepts/fundamentals/template_tag_syntax/?h=self#self-closing-tags

you can set them to be used as control blocks by setting the custom_blocks configuration value like:

custom_blocks="component,slot,fill"

but now when using a self closing version of one of these tags, djlint would like to indent the following line as if it's inside a control block.

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I know that's there been couple other attempts at this (#1054), but the bugs associated are closed. Made sense to me to have a feature open requesting it. Feel free to close if it's not helpful