[NI] Discard DefNotNull types inside invariant positions

#KT-30297 Fixed
 #KT-32168 Fixed
 #KT-27722 Fixed (actually, it was fixed with addition of DefNotNullTypes, and now test was added to save this behavior)
 #KT-32345 Fixed

compiler/testData/diagnostics/testsWithStdLib/inference/kt27772.kt

@@ -0,0 +1,9 @@
+// !WITH_NEW_INFERENCE
+
+fun <T> foo(resources: List<T>) {
+    resources.map { runCatching { it } }.<!OI;TYPE_INFERENCE_UPPER_BOUND_VIOLATED!>mapNotNull<!> { it.getOrNull() }
+}
+
+fun <T: Any> bar(resources: List<T>) {
+    resources.map { runCatching { it } }.mapNotNull { it.getOrNull() }
+}