Replace method call to preserve backward compatibility

Author: Planeshifter

lib/node_modules/@stdlib/string/format/lib/main.js

@@ -94,7 +94,7 @@ function format( str ) {
 					token.padZeros = false;
 					break;
 				case '0':
-					token.padZeros = !flags.includes( '-' ); // NOTE: We use built-in `Array.prototype.includes` here instead of `@stdlib/assert/contains` in order to avoid circular dependencies.
+					token.padZeros = flags.indexOf( '-' ) < 0; // NOTE: We use built-in `Array.prototype.indexOf` here instead of `@stdlib/assert/contains` in order to avoid circular dependencies.
 					break;
 				case '#':
 					token.alternate = true;