Fix Layout/SpaceInsideBlockBraces offenses in app

.rubocop_todo/layout/space_inside_block_braces.yml

app/controllers/groups/boards_controller.rb

app/controllers/profiles/two_factor_auths_controller.rb

app/controllers/projects/boards_controller.rb

...periments/security_reports_mr_widget_prompt_experiment.rb

...ments/video_tutorials_continuous_onboarding_experiment.rb

app/helpers/favicon_helper.rb

app/helpers/time_zone_helper.rb

app/helpers/todos_helper.rb

app/models/authentication_event.rb

app/models/bulk_imports/entity.rb

app/models/concerns/featurable.rb

app/models/integrations/bamboo.rb

app/models/integrations/buildkite.rb

app/models/integrations/teamcity.rb

app/models/network/graph.rb

app/models/operations/feature_flag.rb

app/models/packages/package.rb

app/models/preloaders/labels_preloader.rb

app/models/project.rb