Introduce warning for the changing arguments execution order for named varargs (KT-17691)

compiler/testData/diagnostics/tests/checkArguments/kt17691WithEnabledFeature.kt

@@ -0,0 +1,25 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+// !LANGUAGE: +UseCorrectExecutionOrderForVarargArguments
+// WITH_RUNTIME
+
+fun foo(vararg x: Unit, y: Any) {}
+
+fun main() {
+    foo({  }(), y = {  }())
+    foo(x = *<!REDUNDANT_SPREAD_OPERATOR_IN_NAMED_FORM_IN_FUNCTION!>arrayOf({  }())<!>, y = {  }())
+    foo(x = arrayOf({  }()), y = {  }())
+    foo(*arrayOf({  }()), y = {  }())
+}
+
+fun foo2(vararg x: Unit, y: Any, z: Any) {}
+
+fun main2() {
+    foo2(y = {  }(), x = arrayOf({  }()), z = {  }())
+}
+
+fun foo3(vararg x: Unit, y: Any, z: Any = {  }()) {}
+
+fun main3() {
+    // no warning, execution order is already right
+    foo3(y = {  }(), x = arrayOf({  }()))
+}