[Psi2Ir] Fix generation of hashcode for generic inline class

compiler/testData/ir/irText/classes/inlineClassSyntheticMethods.kt

@@ -0,0 +1,16 @@
+// !LANGUAGE: +InlineClasses
+
+class C<T>(val t: T) {
+    override fun hashCode(): Int = t as Int
+}
+
+inline class IC<TT>(val c: C<TT>) {
+    fun foo(): Int = c.hashCode()
+}
+
+fun box(): String {
+    val ic = IC<Int>(C(42))
+
+    if (ic.foo() != 42) return "FAIL"
+    return "OK"
+}