Fixed Backward Pagination (PalisadoesFoundation#3239)

* fixed backward pagination

* added tests for defaultGraphQLConnection.ts

* coderabbitai suggested changes

Author: rahulch07

src/utilities/defaultGraphQLConnection.ts

@@ -210,7 +210,7 @@ export const transformToDefaultGraphQLConnection = <
 		if (rawNodes.length === limit) {
 			connection.pageInfo.hasPreviousPage = true;
 			// Remove the extra fetched node.
-			rawNodes.shift();
+			rawNodes.pop();
 		} else {
 			connection.pageInfo.hasPreviousPage = false;
 		}