Reporting ACCIDENTAL_OVERRIDE on jvm signatures that have no descriptors

(marking them SYNTHETIC)

compiler/testData/diagnostics/testsWithStdLib/duplicateJvmSignature/platformStaticInClassObject.kt

@@ -0,0 +1,11 @@
+import kotlin.platform.platformStatic
+
+open class Base {
+    fun foo() {}
+}
+
+class Derived : Base() {
+    class object {
+        <!ACCIDENTAL_OVERRIDE!>platformStatic fun foo()<!> {}
+    }
+}