More context providing to the block support rather than the Group block

lib/block-supports/layout.php

@@ -6,7 +6,8 @@
  */
 
 /**
- * Registers the layout block attribute for block types that support it.
+ * Registers the layout block attribute for block types that support it,
+ * and sets `provides_context` to allow children to access the layout settings.
  *
  * @param WP_Block_Type $block_type Block Type.
  */
@@ -22,6 +23,14 @@ function gutenberg_register_layout_support( $block_type ) {
 				'type' => 'object',
 			);
 		}
+
+		if ( ! isset( $block_type->provides_context ) ) {
+			$block_type->provides_context = array();
+		}
+
+		if ( ! array_key_exists( 'layout', $block_type->provides_context ) ) {
+			$block_type->provides_context['layout'] = 'layout';
+		}
 	}
 }
 

packages/block-editor/src/hooks/layout.js

@@ -166,6 +166,29 @@ export function addAttribute( settings ) {
 	return settings;
 }
 
+/**
+ * Adds layout to `providesContext` so that the layout context can be accessed
+ * via child blocks.
+ *
+ * @param {Object} settings Original block settings.
+ *
+ * @return {Object} Filtered block settings.
+ */
+export function addProvidesContext( settings ) {
+	if ( settings.providesContext?.layout ) {
+		return settings;
+	}
+	if ( hasBlockSupport( settings, layoutBlockSupportKey ) ) {
+		const providesContext = settings.providesContext || {};
+		settings.providesContext = {
+			...providesContext,
+			layout: 'layout',
+		};
+	}
+
+	return settings;
+}
+
 /**
  * Override the default edit UI to include layout controls
  *
@@ -240,6 +263,11 @@ addFilter(
 	'core/layout/addAttribute',
 	addAttribute
 );
+addFilter(
+	'blocks.registerBlockType',
+	'core/layout/addProvidesContext',
+	addProvidesContext
+);
 addFilter(
 	'editor.BlockListBlock',
 	'core/editor/layout/with-layout-styles',

packages/block-library/src/group/block.json

@@ -17,10 +17,6 @@
 			"enum": [ "all", "insert", false ]
 		}
 	},
-	"providesContext": {
-		"layout": "layout",
-		"orientation": "orientation"
-	},
 	"supports": {
 		"align": [ "wide", "full" ],
 		"anchor": true,