Merge branch 'main' into glitch-soc/merge-upstream

Conflicts:
- `app/controllers/accounts_controller.rb`:
  Upstream introduced support for private pinned toots, but glitch-soc's query
  was a bit different as it filtered out local-only toots.
  Used upstream's query, while adding local-only filtering back.
- `app/controllers/activitypub/collections_controller.rb`:
  Same thing with regards to local-only posts.
- `app/validators/status_pin_validator.rb`:
  Not a real conflict, but the line below was different in glitch-soc due to
  the configurable pinned toots limit.

spec/models/status_pin_spec.rb

@@ -24,11 +24,11 @@ RSpec.describe StatusPin, type: :model do
       expect(StatusPin.new(account: account, status: reblog).save).to be false
     end
 
-    it 'does not allow pins of private statuses' do
+    it 'does allow pins of direct statuses' do
       account = Fabricate(:account)
       status  = Fabricate(:status, account: account, visibility: :private)
 
-      expect(StatusPin.new(account: account, status: status).save).to be false
+      expect(StatusPin.new(account: account, status: status).save).to be true
     end
 
     it 'does not allow pins of direct statuses' do