Add variants to exclude event timing targetSelector from Interop 2025

Author: canova

event-timing/idlharness.any.js

@@ -1,4 +1,7 @@
+// META: variant=?exclude=targetSelector
+// META: variant=?include=targetSelector
 // META: global=window,worker
+// META: script=/common/subset-tests-by-key.js
 // META: script=/resources/WebIDLParser.js
 // META: script=/resources/idlharness.js