HHH-18647 Fix insert values check for table group joins

Author: mbellade

hibernate-core/src/main/java/org/hibernate/query/sqm/sql/BaseSqmToSqlAstConverter.java

@@ -1280,11 +1280,6 @@ public InsertStatement visitInsertValuesStatement(SqmInsertValuesStatement<?> sq
 					this
 			);
 
-			if ( !rootTableGroup.getTableReferenceJoins().isEmpty()
-					|| !rootTableGroup.getTableGroupJoins().isEmpty() ) {
-				throw new HibernateException( "Not expecting multiple table references for an SQM INSERT-SELECT" );
-			}
-
 			getFromClauseAccess().registerTableGroup( rootPath, rootTableGroup );
 
 			final InsertSelectStatement insertStatement = new InsertSelectStatement(
@@ -1300,9 +1295,8 @@ public InsertStatement visitInsertValuesStatement(SqmInsertValuesStatement<?> sq
 					rootTableGroup
 			);
 
-			if ( !rootTableGroup.getTableReferenceJoins().isEmpty()
-					|| !rootTableGroup.getTableGroupJoins().isEmpty() ) {
-				throw new SemanticException( "Not expecting multiple table references for an SQM INSERT-SELECT" );
+			if ( hasJoins( rootTableGroup ) ) {
+				throw new HibernateException( "Not expecting multiple table references for an SQM INSERT-SELECT" );
 			}
 
 			for ( SqmValues sqmValues : sqmStatement.getValuesList() ) {