Fix several bugs in serialization of inner generic classes

- Interner was working incorrectly with parents
- nested classes were serialized in codegen out of any context

 #KT-5660 Fixed

compiler/testData/loadJava/compiledKotlin/nested/deepInnerGeneric.kt

@@ -0,0 +1,13 @@
+package test
+
+class A<TA> {
+    inner class B<TB> {
+        inner class C<TC> {
+            inner class D<TD> {
+                fun <P1, P2, P3, P4> foo(p1: P1, p2: P2, p3: P3, p4: P4): Nothing = null!!
+
+                fun bar(ta: TA, tb: TB, tc: TC, td: TD): A<TA>.B<TB>.C<TC>.D<TD> = foo<TA, TB, TC, TD>(ta, tb, tc, td)
+            }
+        }
+    }
+}

compiler/testData/loadJava/compiledKotlin/nested/deepInnerGeneric.txt

@@ -0,0 +1,19 @@
+package test
+
+internal final class A</*0*/ TA> {
+    /*primary*/ public constructor A</*0*/ TA>()
+
+    internal final inner class B</*0*/ TB> {
+        /*primary*/ public constructor B</*0*/ TB>()
+
+        internal final inner class C</*0*/ TC> {
+            /*primary*/ public constructor C</*0*/ TC>()
+
+            internal final inner class D</*0*/ TD> {
+                /*primary*/ public constructor D</*0*/ TD>()
+                internal final fun bar(/*0*/ ta: TA, /*1*/ tb: TB, /*2*/ tc: TC, /*3*/ td: TD): test.A.B.C.D<TD>
+                internal final fun </*0*/ P1, /*1*/ P2, /*2*/ P3, /*3*/ P4> foo(/*0*/ p1: P1, /*1*/ p2: P2, /*2*/ p3: P3, /*3*/ p4: P4): kotlin.Nothing
+            }
+        }
+    }
+}

compiler/testData/loadJava/compiledKotlin/nested/innerClassReferencesOuterTP.kt

@@ -0,0 +1,5 @@
+package test
+
+class InnerClassReferencesOuterTP<P> {
+    inner class Inner<Q : P>
+}

compiler/testData/loadJava/compiledKotlin/nested/innerClassReferencesOuterTP.txt

@@ -0,0 +1,9 @@
+package test
+
+internal final class InnerClassReferencesOuterTP</*0*/ P> {
+    /*primary*/ public constructor InnerClassReferencesOuterTP</*0*/ P>()
+
+    internal final inner class Inner</*0*/ Q : P> {
+        /*primary*/ public constructor Inner</*0*/ Q : P>()
+    }
+}

compiler/testData/loadJava/compiledKotlin/nested/membersReferenceOuterTP.kt

@@ -0,0 +1,11 @@
+package test
+
+class MembersReferenceOuterTP<P> {
+    inner class Inner {
+        fun f<Q : P>() {}
+        fun g(p: P): P = null!!
+
+        val v: P = null!!
+        val <Q : P> w: Q = null!!
+    }
+}

compiler/testData/loadJava/compiledKotlin/nested/membersReferenceOuterTP.txt

@@ -0,0 +1,15 @@
+package test
+
+internal final class MembersReferenceOuterTP</*0*/ P> {
+    /*primary*/ public constructor MembersReferenceOuterTP</*0*/ P>()
+
+    internal final inner class Inner {
+        /*primary*/ public constructor Inner()
+        internal final val v: P
+            internal final fun <get-v>(): P
+        internal final val </*0*/ Q : P> w: Q
+            internal final fun <get-w>(): Q
+        internal final fun </*0*/ Q : P> f(): kotlin.Unit
+        internal final fun g(/*0*/ p: P): P
+    }
+}