[FE 1.0] Report warnings or errors for upper bounded type variables by an empty intersection type

compiler/testData/diagnostics/tests/inference/coercionToUnit/coercionToUnitWithNothingType.kt

@@ -47,7 +47,7 @@ fun test(i: Inv<Nothing>, iUnit: Inv<Unit>) {
 
     if (iUnit is <!INCOMPATIBLE_TYPES!>String<!>) {
         launch {
-            run(A.flexible(iUnit)) { 42 }
+            run(A.<!INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION_WARNING!>flexible<!>(iUnit)) { 42 }
         }
     }
 }