Humanize type mismatch diagnostic caused by type projections

#KT-10581 Fixed

compiler/testData/diagnostics/tests/generics/projectionsScope/varargs.kt

@@ -0,0 +1,12 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+
+class A<T> {
+    fun foo(vararg x: T) {}
+}
+
+fun test(a: A<out CharSequence>, y: Array<out CharSequence>) {
+    a.<!MEMBER_PROJECTED_OUT!>foo<!>("", "", "")
+    a.foo(*<!TYPE_MISMATCH_DUE_TO_TYPE_PROJECTIONS!>y<!>)
+    // TODO: TYPE_MISMATCH_DUE_TO_TYPE_PROJECTIONS probably redundant
+    a.<!MEMBER_PROJECTED_OUT!>foo<!>(*<!TYPE_MISMATCH_DUE_TO_TYPE_PROJECTIONS!>y<!>, "")
+}