Volatile is no more allowed on values #KT-7670 Fixed

compiler/testData/diagnostics/testsWithStdLib/annotations/Volatile.kt

@@ -0,0 +1,7 @@
+import kotlin.jvm.Volatile
+
+class My {
+    <!VOLATILE_ON_VALUE!>@Volatile<!> val x = 0
+    // ok
+    @Volatile var y = 1
+}