Adjust source in test class to work around eclipse compiler bug

Issue: SPR-15586

spring-context/src/test/java/org/springframework/context/annotation/configuration/ConfigurationClassProcessingTests.java

@@ -514,8 +514,9 @@ public class ConfigurationClassProcessingTests {
 		void register(GenericApplicationContext ctx) {
 			ctx.registerBean("spouse", TestBean.class,
 					() -> new TestBean("functional"));
+			Supplier<TestBean> testBeanSupplier = () -> new TestBean(ctx.getBean("spouse", TestBean.class));
 			ctx.registerBean(TestBean.class,
-					() -> new TestBean(ctx.getBean("spouse", TestBean.class)),
+					testBeanSupplier,
 					bd -> bd.setPrimary(true));
 		}