Reverting hasInnerBlocks change to punt to another PR. It will requir…

…ed E2E test changes and more manual testing in post and site editors.

packages/block-library/src/post-content/edit.js

@@ -15,7 +15,11 @@ import {
 	Warning,
 	store as blockEditorStore,
 } from '@wordpress/block-editor';
-import { useEntityProp, useEntityBlockEditor } from '@wordpress/core-data';
+import {
+	useEntityProp,
+	useEntityBlockEditor,
+	store as coreStore,
+} from '@wordpress/core-data';
 import { useSelect, useDispatch } from '@wordpress/data';
 import { Placeholder, Button } from '@wordpress/components';
 import { postContent as icon } from '@wordpress/icons';
@@ -101,14 +105,23 @@ function EditableContent( { context = {}, clientId } ) {
 		{ id: postId }
 	);
 
-	const setInserterIsOpened = useSelect(
-		( select ) =>
-			select( blockEditorStore ).getSettings()
-				.__experimentalSetIsInserterOpened,
-		[]
+	const { entityRecord, setInserterIsOpened } = useSelect(
+		( select ) => {
+			return {
+				entityRecord: select( coreStore ).getEntityRecord(
+					'postType',
+					postType,
+					postId
+				),
+				setInserterIsOpened:
+					select( blockEditorStore ).getSettings()
+						.__experimentalSetIsInserterOpened,
+			};
+		},
+		[ postType, postId ]
 	);
 
-	const hasInnerBlocks = !! blocks?.length;
+	const hasInnerBlocks = !! entityRecord?.content?.raw || blocks?.length;
 
 	const { children, ...props } = useInnerBlocksProps(
 		useBlockProps( {