Group block.json enabling spacing support and showing margin/padding controls by default

block.json

{
	"apiVersion": 2,
	"name": "core/group",
	"title": "Group",
	"category": "design",
	"description": "Combine blocks into a group.",
	"keywords": [ "container", "wrapper", "row", "section" ],
	"textdomain": "default",
	"attributes": {
		"tagName": {
			"type": "string",
			"default": "div"
		},
		"templateLock": {
			"enum": [ "all", "insert", false ]
		}
	},
	"supports": {
		"align": [ "wide", "full" ],
		"anchor": true,
		"html": false,
		"color": {
			"gradients": true,
			"link": true
		},
		"spacing": {
			"margin": true,
			"padding": true,
			"__experimentalDefaultControls": {
				"padding": true,
				"margin": true
			}
		},
		"__experimentalBorder": {
			"color": true,
			"radius": true,
			"style": true,
			"width": true
		},
		"__experimentalLayout": true
	},
	"editorStyle": "wp-block-group-editor",
	"style": "wp-block-group"
}