Handle CLI failure exit status at the top-level script (#28322)

.rubocop.yml

@@ -96,12 +96,11 @@ Rails/FilePath:
 Rails/HttpStatus:
   EnforcedStyle: numeric
 
-# Reason: Allowed in `tootctl` CLI code and in boot ENV checker
+# Reason: Allowed in boot ENV checker
 # https://docs.rubocop.org/rubocop-rails/cops_rails.html#railsexit
 Rails/Exit:
   Exclude:
     - 'config/boot.rb'
-    - 'lib/mastodon/cli/*.rb'
 
 # Reason: Conflicts with `Lint/UselessMethodDefinition` for inherited controller actions
 # https://docs.rubocop.org/rubocop-rails/cops_rails.html#railslexicallyscopedactionfilter