Added diagnostic test for Array<T> instances usage

when T is not reified

compiler/testData/diagnostics/testsWithStdLib/reified/nonCallableReiefied.kt

@@ -0,0 +1,11 @@
+class A<T>(val x: Array<T>) {
+    val y: Int = x[0].toString().length
+
+    fun foo(a: T) {
+        x[0] = a
+    }
+
+    fun <R> bar(a: Array<R>): Int = a[0].toString().length
+}
+
+fun <T> baz(a: Array<T>): String = a[0].toString()