fix: add missing deleting beans for organizations (#11699)

- Delete blocked users entries.
  - Organization cannot get blocked, it can block other people however.
- Delete following entries.
  - Organization cannot follow, it can be followed by users.
- Resolves forgejo/forgejo#11416

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/11699
Reviewed-by: Mathieu Fenniak <mfenniak@noreply.codeberg.org>
Reviewed-by: 0ko <0ko@noreply.codeberg.org>
Reviewed-by: Andreas Ahlenstorf <aahlenst@noreply.codeberg.org>
Co-authored-by: Gusted <postmaster@gusted.xyz>
Co-committed-by: Gusted <postmaster@gusted.xyz>

services/org/TestDeleteOrganization/follow.yml

@@ -0,0 +1,4 @@
+-
+  id: 1001
+  user_id: 1001
+  follow_id: 6

services/org/TestDeleteOrganization/forgejo_blocked_user.yml

@@ -0,0 +1,5 @@
+-
+  id: 1001
+  user_id: 6
+  block_id: 1
+  created_unix: 1772018142

services/org/TestDeleteOrganization/user.yml

@@ -0,0 +1,13 @@
+-
+  id: 1001
+  lower_name: user1001
+  name: user1001
+  full_name: User That loves Upper Cases
+  email: AnotherTestUserWithUpperCaseEmail@otto.splvs.net
+  passwd: ZogKvWdyEx:password
+  passwd_hash_algo: dummy
+  avatar: ''
+  avatar_email: anothertestuserwithuppercaseemail@otto.splvs.net
+  login_name: user1
+  created_unix: 1772018142
+  num_following: 1

services/org/org_test.go

@@ -32,6 +32,8 @@ func TestDeleteOrganization(t *testing.T) {
 	unittest.AssertNotExistsBean(t, &organization.OrgUser{OrgID: 6})
 	unittest.AssertNotExistsBean(t, &organization.Team{OrgID: 6})
 	unittest.AssertNotExistsBean(t, &actions.ActionRunnerToken{OwnerID: optional.Some[int64](6)})
+	unittest.AssertNotExistsBean(t, &user_model.Follow{FollowID: 6})
+	unittest.AssertNotExistsBean(t, &user_model.BlockedUser{UserID: 6})
 
 	org = unittest.AssertExistsAndLoadBean(t, &organization.Organization{ID: 3})
 	err := DeleteOrganization(db.DefaultContext, org, false)
@@ -41,4 +43,6 @@ func TestDeleteOrganization(t *testing.T) {
 	user := unittest.AssertExistsAndLoadBean(t, &organization.Organization{ID: 5})
 	require.Error(t, DeleteOrganization(db.DefaultContext, user, false))
 	unittest.CheckConsistencyFor(t, &user_model.User{}, &organization.Team{})
+
+	assert.Zero(t, unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1001}).NumFollowing)
 }