NI: Add flexible Nothing to trivial constraints to filter it

compiler/testData/diagnostics/tests/inference/constraints/errorUpperBoundConstraint.kt

@@ -20,7 +20,7 @@ public class Foo {
 // FILE: test.kt
 
 fun test(e: <!UNRESOLVED_REFERENCE!>ErrorType<!>) {
-    Foo.foo {
+    Foo.<!NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>foo<!> {
         Sam.Result.create(<!DEBUG_INFO_ELEMENT_WITH_ERROR_TYPE!>e<!>)
     }
 }

compiler/testData/diagnostics/tests/inference/nothingType/implicitInferenceTToFlexibleNothing.kt

@@ -0,0 +1,11 @@
+// !DIAGNOSTICS: -UNUSED_VARIABLE -UNCHECKED_CAST -UNUSED_PARAMETER
+// !LANGUAGE: +NewInference
+// SKIP_TXT
+
+import java.util.*
+
+fun <T> foo (f: () -> List<T>): T = null as T
+
+fun main() {
+    val x = <!NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>foo<!> { Collections.<!NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>emptyList<!>() }
+}