[JS IR] Fix findInterfaceImplementation

isOrOverridesSynthesized uses descriptors which does not work with
wrapped descriptors

compiler/testData/codegen/box/regressions/kt39088.kt

@@ -0,0 +1,35 @@
+// MODULE: lib
+// FILE: lib.kt
+
+package lib
+
+interface Stoppable {
+    fun isStopped(): Boolean
+}
+
+interface EventRo : Stoppable
+
+interface Event : Stoppable {
+    override fun isStopped(): Boolean {
+        return true
+    }
+}
+
+abstract class EventBase : Event
+
+interface MouseEventRo : EventRo
+
+open class MouseEvent : EventBase(), MouseEventRo
+
+// MODULE: main(lib)
+// FILE: main.kt
+
+package main
+
+fun box(): String {
+    if (lib.MouseEvent().isStopped()) {
+        return "OK"
+    }
+
+    return "Fail"
+}