Lambda to reference: not-null types are now preferred for platform type receivers #KT-14394 Fixed

idea/testData/intentions/convertLambdaToReference/platformType.kt

@@ -0,0 +1,4 @@
+// WITH_RUNTIME
+
+val y = java.lang.String.valueOf(42)
+val x = y.let { <caret>it.capitalize() }

idea/testData/intentions/convertLambdaToReference/platformType.kt.after

@@ -0,0 +1,4 @@
+// WITH_RUNTIME
+
+val y = java.lang.String.valueOf(42)
+val x = y.let(String::capitalize)

idea/testData/intentions/convertLambdaToReference/typeFromJava.kt.after

@@ -2,5 +2,5 @@
 // See KT-13411
 
 fun use() {
-    B.text.map(Any?::toString)
+    B.text.map(Any::toString)
 }

idea/testData/intentions/convertLambdaToReference/typeFromJavaFlexibleRecursive.kt.after

@@ -3,5 +3,5 @@
 
 fun use() {
     val text = B.text
-    text.map(MutableList<Any>?::toString)
+    text.map(MutableList<Any>::toString)
 }