[AA LC] Add @java.lang.Override on override functions

compiler/testData/asJava/lightClasses/nullabilityAnnotations/UnitAsGenericArgument.fir.java

@@ -0,0 +1,7 @@
+public final class C /* C*/ implements Base<kotlin.Unit> {
+  @java.lang.Override()
+  public void foo(@org.jetbrains.annotations.NotNull() kotlin.Unit);//  foo(kotlin.Unit)
+
+  public  C();//  .ctor()
+
+}