Ensure synthesized nested annotation arrays retain correct type

Prior to this commit, when a nested array of annotations was
synthesized while adapting values within an AnnotationAttributes map,
the array was improperly replaced with an array of type Annotation[]
instead of an array of the concrete annotation type, which can lead to
unexpected run-time exceptions.

This commit fixes this bug by replacing annotations in the existing
array with synthesized versions of those annotations, thereby retaining
the original array's component type.

Issue: SPR-13077

spring-core/src/main/java/org/springframework/core/annotation/AnnotationUtils.java

@@ -924,11 +924,10 @@ public abstract class AnnotationUtils {
 				return mappedAnnotations;
 			}
 			else {
-				Annotation[] synthesizedAnnotations = new Annotation[annotations.length];
 				for (int i = 0; i < annotations.length; i++) {
-					synthesizedAnnotations[i] = synthesizeAnnotation(annotations[i], annotatedElement);
+					annotations[i] = synthesizeAnnotation(annotations[i], annotatedElement);
 				}
-				return synthesizedAnnotations;
+				return annotations;
 			}
 		}