Fix schedule tasks bugs (#28691)

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 97292da960)

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

modules/actions/workflows_test.go

@@ -118,6 +118,13 @@ func TestDetectMatched(t *testing.T) {
 			yamlOn:       "on: gollum",
 			expected:     true,
 		},
+		{
+			desc:         "HookEventSchedue(schedule) matches GithubEventSchedule(schedule)",
+			triggedEvent: webhook_module.HookEventSchedule,
+			payload:      nil,
+			yamlOn:       "on: schedule",
+			expected:     true,
+		},
 	}
 
 	for _, tc := range testCases {