K2: Fix deserialization of flexible type based on type parameter

It's anyway safe to use avoidComprehensiveCheck = true because
during deserialization we're sure that we need DNN type because
it's been serialized as such.

compiler/testData/codegen/box/compileKotlinAgainstKotlin/fir/javaTypeParameterBy.kt

@@ -0,0 +1,24 @@
+// TARGET_BACKEND: JVM
+// WITH_STDLIB
+// MODULE: lib
+
+// FILE: JavaInterface.java
+public interface JavaInterface {
+    <K extends Comparable<K>> K foo();
+}
+
+// FILE: A.kt
+
+class A(j: JavaInterface) : JavaInterface by j
+
+
+// MODULE: main(lib)
+// FILE: main.kt
+
+fun box(): String {
+    val t = object : JavaInterface {
+        override fun <K : Comparable<K>> foo(): K = "OK" as K
+    }
+
+    return A(t).foo<String>()
+}