KT-4909 Smart completion does not work for named arguments

KT-7668 Named argument completion does not work after vararg

 #KT-4909 Fixed
 #KT-7668 Fixed

idea/idea-completion/testData/smart/NamedArgument.kt

@@ -0,0 +1,8 @@
+fun foo(param1: String, param2: Int) { }
+
+fun bar(pInt: Int, pString: String) {
+    foo(param2 = <caret>)
+}
+
+// EXIST: pInt
+// ABSENT: pString

idea/idea-completion/testData/smart/SecondVararg.kt

@@ -0,0 +1,9 @@
+fun foo(vararg v1: Int, vararg v2: Char, s: String) { }
+
+fun bar(c: Char, pInt: Int) {
+    foo(*intArrayOf(), <caret>)
+}
+
+// EXIST: c
+// ABSENT: pInt
+// EXIST: { lookupString: "charArrayOf", itemText: "*charArrayOf" }