"Call on collection type may be reduced": fix false positive with mapNotNull, generic lambda block and new inference

#KT-32801 Fixed

idea/testData/inspectionsLocal/collections/uselessCallOnCollection/MapNotNullWithGenericLambda.kt

@@ -0,0 +1,11 @@
+// PROBLEM: none
+// COMPILER_ARGUMENTS: -XXLanguage:+NewInference
+// WITH_RUNTIME
+
+fun <R> mylet(block: () -> R): R = block()
+
+val x = listOf(1, 2, 3).<caret>mapNotNull {
+    mylet {
+        null
+    }
+}