Bug 1716159 - set dom.serviceWorkers.enabled true to fix toolkit/components/extensions/test/xpcshell/webidl-api/ test failures. r=darktrojan

Differential Revision: https://phabricator.services.mozilla.com/D117598

mail/app/profile/all-thunderbird.js

@@ -405,6 +405,7 @@ pref("browser.display.auto_quality_min_font_size", 0);
 
 pref("view_source.syntax_highlight", false);
 
+pref("dom.serviceWorkers.enabled", true);
 
 /////////////////////////////////////////////////////////////////
 // End core all.js pref overrides