Bug 1566128 - Correct bug component for wpt eventsource; r=edenchuang

Differential Revision: https://phabricator.services.mozilla.com/D38101

--HG--
extra : moz-landing-system : lando

testing/web-platform/moz.build

@@ -282,7 +282,7 @@ with Files("tests/entries-api/**"):
     BUG_COMPONENT = ("Core", "DOM: Core & HTML")
 
 with Files("tests/eventsource/**"):
-    BUG_COMPONENT = ("Core", "DOM: Networking")
+    BUG_COMPONENT = ("Core", "DOM: Events")
 
 with Files("tests/feature-policy/**"):
     BUG_COMPONENT = ("Core", "DOM: Core & HTML")