Properly reference type parameter descriptors

'descriptor -> descriptor.original' relation is often inconsistent
wrt 'containingDeclaration', parameters, and type parameters,
we have to introduce some workarounds here.

compiler/testData/codegen/box/javaInterop/generics/javaNestedSamInterface.kt

@@ -0,0 +1,24 @@
+// !LANGUAGE: +NewInference
+// TARGET_BACKEND: JVM
+// IGNORE_BACKEND_FIR: JVM_IR
+// FILE: javaNestedSamInterface.kt
+import test.A
+
+fun box(): String = A<Int>(42).get<String> { "OK" }
+
+// FILE: test/A.java
+package test;
+
+public class A<X extends Number> {
+    private final X x;
+
+    public A(X x) {
+        this.x = x;
+    }
+
+    public interface I<T> {
+        T compute();
+    }
+
+    public <T> T get(I<T> value) { return value.compute(); }
+}