Prohibit assigning single elements into varargs in named form

#KT-20588 Fixed
 #KT-20589 Fixed

idea/testData/quickfix/surroundWithArrayOfForNamedArgumentsToVarargs/replaceForbiddenAssigningIntoArrayCall.kt

@@ -0,0 +1,9 @@
+// "Surround with *arrayOf(...)" "true"
+// COMPILER_ARGUMENTS: -XXLanguage:+ProhibitAssigningSingleElementsToVarargsInNamedForm
+// DISABLE-ERRORS
+
+fun anyFoo(vararg a: Any) {}
+
+fun test() {
+    anyFoo(a = in<caret>tArrayOf(1))
+}

idea/testData/quickfix/surroundWithArrayOfForNamedArgumentsToVarargs/replaceForbiddenAssigningIntoArrayCall.kt.after

@@ -0,0 +1,9 @@
+// "Surround with *arrayOf(...)" "true"
+// COMPILER_ARGUMENTS: -XXLanguage:+ProhibitAssigningSingleElementsToVarargsInNamedForm
+// DISABLE-ERRORS
+
+fun anyFoo(vararg a: Any) {}
+
+fun test() {
+    anyFoo(a = *arrayOf(intArrayOf(1)))
+}