Complete functions with single parameter on typing '{'

For KT-4049 When completing a function that takes a lambda and immediately typing '{', swallow the '{'
 #KT-4049 Fixed

idea/testData/completion/handlers/InsertFunctionWithSingleParameterWithBrace.kt

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

idea/testData/completion/handlers/InsertFunctionWithSingleParameterWithBrace.kt.after

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