Fix admins being able to suspend their instance actor (#14567)

* Fix admin being able to suspend their own instance account

* Add text about the instance's own actor in admin view

* Change instance actor notice from flash message to template

* Do not list local instance actor in account moderation list

1 files changed, 2 insertions, 1 deletions

diff --git a/app/models/account.rb b/app/models/account.rb
index e21b353e9..80eb92a71 100644
--- a/app/models/account.rb
+++ b/app/models/account.rb
@@ -100,6 +100,7 @@ class Account < ApplicationRecord
   scope :sensitized, -> { where.not(sensitized_at: nil) }
   scope :without_suspended, -> { where(suspended_at: nil) }
   scope :without_silenced, -> { where(silenced_at: nil) }
+  scope :without_instance_actor, -> { where.not(id: -99) }
   scope :recent, -> { reorder(id: :desc) }
   scope :bots, -> { where(actor_type: %w(Application Service)) }
   scope :groups, -> { where(actor_type: 'Group') }
@@ -222,7 +223,7 @@ class Account < ApplicationRecord
   end
 
   def suspended?
-    suspended_at.present?
+    suspended_at.present? && !instance_actor?
   end
 
   def suspended_permanently?