Remove non-human created tokens from PAT list

Removes personal access tokens created by non-human
users from the list of personal access tokens
in the credentials inventory.

Project access tokens can be removed but must
be removed from the Project access tokens tab
instead as this also enqueues a job to remove
the bot user as well as the token.

EE: true
Changelog: changed

ee/spec/requests/admin/credentials_controller_spec.rb

@@ -37,7 +37,7 @@ RSpec.describe Admin::CredentialsController, type: :request do
             specify do
               get admin_credentials_path(filter: filter)
 
-              expect(assigns(:credentials)).to match_array([user.personal_access_tokens, project_access_token].flatten)
+              expect(assigns(:credentials)).to match_array([user.personal_access_tokens].flatten)
             end
           end
 

spec/models/personal_access_token_spec.rb

@@ -37,7 +37,7 @@ RSpec.describe PersonalAccessToken do
       let_it_be(:project_member) { create(:project_member, user: user) }
       let_it_be(:project_access_token) { create(:personal_access_token, user: user) }
 
-      subject { described_class.not_project_access_token }
+      subject { described_class.owner_is_human }
 
       it { is_expected.not_to include(project_access_token) }
     end