Update packages/block-library/src/spacer/edit.js

check there's no type before using default type

Co-authored-by: Andrew Serong <14988353+andrewserong@users.noreply.github.com>

packages/block-library/src/spacer/edit.js

@@ -99,7 +99,7 @@ const SpacerEdit = ( {
 		default: { type: defaultType } = {},
 	} = parentLayout || {};
 	// Check if the spacer is inside a flex container.
-	const isFlexLayout = type === 'flex' || defaultType === 'flex';
+	const isFlexLayout = type === 'flex' || ( ! type && defaultType === 'flex' );
 	// If the spacer is inside a flex container, it should either inherit the orientation
 	// of the parent or use the flex default orientation.
 	const inheritedOrientation =