Add Firefox impl_url for ServiceWorker modules (#26296)

firefox api.serviceworker impl_url added

---------

Co-authored-by: Claas Augner <[email protected]>

Author: stag-enterprises

api/ServiceWorker.json

@@ -54,7 +54,8 @@
             "chrome_android": "mirror",
             "edge": "mirror",
             "firefox": {
-              "version_added": false
+              "version_added": false,
+              "impl_url": "https://bugzil.la/1360870"
             },
             "firefox_android": "mirror",
             "ie": {