Lambda to anonymous function: use callable builder (KT-7710)

idea/testData/intentions/lambdaToAnonymousFunction/explicitParameterName.kt.after

@@ -1,5 +1,7 @@
 fun bar(f: (Int, Int) -> String) {}
 
 fun test() {
-    bar(fun(i: Int, j: Int): String { return "$i$j" })
+    bar(fun(i: Int, j: Int): String {
+        return "$i$j"
+    })
 }