Bug 1716911 - Switch --enable-bootstrap on by default on macos builds on central. r=firefox-build-system-reviewers,nalexander

Differential Revision: https://phabricator.services.mozilla.com/D118107

moz.configure

@@ -197,7 +197,7 @@ def moz_fetches_dir(value):
 def bootstrap_default(host, is_nightly, automation):
     if automation:
         return False
-    if host.cpu == "aarch64" and host.os == "OSX" and is_nightly:
+    if host.os == "OSX" and is_nightly:
         return True