substitute upper bounds after creating all substitutions for type parameters

(otherwise it doesn't work for forward references)

compiler/testData/diagnostics/tests/inference/upperBounds/useBoundsToInferTypeParamsSimple.kt

@@ -4,7 +4,7 @@ fun foo<V : U, U>(<!UNUSED_PARAMETER!>v<!>: V, u: U) = u
 fun bar<U, V : U>(<!UNUSED_PARAMETER!>v<!>: V, u: U) = u
 
 fun test(a: Any, s: String) {
-    val <!UNUSED_VARIABLE!>b<!>: Any = <!TYPE_INFERENCE_UPPER_BOUND_VIOLATED!>foo<!>(a, s) //depends on type parameter order, will be fixed in next commit
+    val <!UNUSED_VARIABLE!>b<!>: Any = foo(a, s)
     val <!UNUSED_VARIABLE!>c<!>: Any = bar(a, s)
 }