Fix #28157 This PR fix the possible bugs about actions schedule. - Move `UpdateRepositoryUnit` and `SetRepoDefaultBranch` from models to service layer - Remove schedules plan from database and cancel waiting & running schedules tasks in this repository when actions unit has been disabled or global disabled. - Remove schedules plan from database and cancel waiting & running schedules tasks in this repository when default branch changed. (cherry picked from commit 97292da96048b036cbe36b3ea66503ac568a73e7) Conflicts: modules/actions/github.go routers/web/repo/setting/default_branch.go routers/web/repo/setting/setting.go services/repository/branch.go services/repository/setting.go tests/integration/actions_trigger_test.go