"Redundant lambda arrow" inspection: Also report arrow with single underscore parameter #KT-24728 Fixed

idea/testData/inspectionsLocal/redundantLambdaArrow/underscore.kt

@@ -0,0 +1,5 @@
+fun foo(f: () -> Unit) {}
+
+fun bar() {
+    foo { <caret>_ -> }
+}

idea/testData/inspectionsLocal/redundantLambdaArrow/underscore.kt.after

@@ -0,0 +1,5 @@
+fun foo(f: () -> Unit) {}
+
+fun bar() {
+    foo { <caret>}
+}