Block Editor: Cleanup AutoBlockPreview render memoization of BlockList (

WordPress#66060)

Co-authored-by: tyxla <tyxla@git.wordpress.org>
Co-authored-by: ciampo <mciampini@git.wordpress.org>
Co-authored-by: sgomes <sergiomdgomes@git.wordpress.org>

packages/block-editor/src/components/block-preview/auto.js

@@ -15,7 +15,7 @@ import EditorStyles from '../editor-styles';
 import { store } from '../../store';
 
 // This is used to avoid rendering the block list if the sizes change.
-let MemoizedBlockList;
+const MemoizedBlockList = memo( BlockList );
 
 const MAX_HEIGHT = 2000;
 const EMPTY_ADDITIONAL_STYLES = [];
@@ -55,9 +55,6 @@ function ScaledBlockPreview( {
 		return styles;
 	}, [ styles, additionalStyles ] );
 
-	// Initialize on render instead of module top level, to avoid circular dependency issues.
-	MemoizedBlockList = MemoizedBlockList || memo( BlockList );
-
 	const scale = containerWidth / viewportWidth;
 	const aspectRatio = contentHeight
 		? containerWidth / ( contentHeight * scale )