Apply SingleSpaceSeparator Checkstyle module

This commit also fixes its violations.

Closes gh-31469

spring-beans/src/main/java/org/springframework/beans/factory/groovy/GroovyBeanDefinitionReader.java

@@ -476,7 +476,7 @@ public class GroovyBeanDefinitionReader extends AbstractBeanDefinitionReader imp
 					this.currentBeanDefinition = new GroovyBeanDefinitionWrapper(beanName, beanClass);
 				}
 			}
-			else  {
+			else {
 				this.currentBeanDefinition = new GroovyBeanDefinitionWrapper(
 						beanName, beanClass, resolveConstructorArguments(args, 1, args.length));
 			}