Remove uses of J.ClassDeclaration#getAnnotations()

This is also covered by `J.ClassDeclaration#getPadding()`

src/main/java/org/openrewrite/staticanalysis/FinalClassVisitor.java

@@ -124,7 +124,7 @@ public J.ClassDeclaration visitClassDeclaration(J.ClassDeclaration classDecl, Ex
                 // Temporary work around until issue https://github.com/openrewrite/rewrite/issues/2348 is implemented.
                 if (!cd.getLeadingAnnotations().isEmpty()) {
                     // Setting the prefix to empty will cause the `Spaces` visitor to fix the formatting.
-                    cd = cd.getAnnotations().withKind(cd.getAnnotations().getKind().withPrefix(Space.EMPTY));
+                    cd = cd.getPadding().withKind(cd.getPadding().getKind().withPrefix(Space.EMPTY));
                 }
 
                 assert getCursor().getParent() != null;