FIR: introduce & use various comparators to sort members while de/serialization

#KT-41018 fixed

compiler/fir/analysis-tests/testData/loadCompiledKotlin/fromLoadJava/ObjectInClass.txt

@@ -1,6 +1,4 @@
 public final class A : R|kotlin/Any| {
-    public constructor(): R|test/A|
-
     public final object B : R|kotlin/Any| {
         public final fun foo(a: R|kotlin/Int|): R|kotlin/String|
 
@@ -8,4 +6,6 @@ public final class A : R|kotlin/Any| {
 
     }
 
+    public constructor(): R|test/A|
+
 }