Fixing interdependency between delegation and fake overrides

Main changes sit in OverrideResolver::generateOverridesAndDelegationInAClass()

Now fake overrides AND delegation are generated for supertypes before any processing is done for subclasses.

compiler/testData/diagnostics/tests/Delegation_ScopeInitializationOrder.kt

@@ -0,0 +1,11 @@
+class D(b: B) : C(b)
+trait A {
+  fun foo() {}
+}
+
+trait B : A {}
+
+class C(b : B) : B by b {
+
+}
+