Chore: Propagate context for dashboard guardian (#39201)

Require guardian.New to take context.Context as first argument. 
Migrates the GetDashboardAclInfoListQuery to be dispatched using context.

Ref #36734

Co-authored-by: Emil Tullstedt <emil.tullstedt@grafana.com>
Co-authored-by: sam boyer <sam.boyer@grafana.com>

pkg/services/sqlstore/sqlstore.go

@@ -113,6 +113,7 @@ func newSQLStore(cfg *setting.Cfg, cacheService *localcache.CacheService, bus bu
 	ss.addAlertNotificationUidByIdHandler()
 	ss.addPreferencesQueryAndCommandHandlers()
 	ss.addDashboardQueryAndCommandHandlers()
+	ss.addDashboardACLQueryAndCommandHandlers()
 	ss.addQuotaQueryAndCommandHandlers()
 
 	// if err := ss.Reset(); err != nil {