Use request.CTX instead of *request.Context (#24877)

* Use request.CTX instead of *request.Context

* Fix tests

server/einterfaces/jobs/scheduler.go

@@ -13,5 +13,5 @@ import (
 type Scheduler interface {
 	Enabled(cfg *model.Config) bool
 	NextScheduleTime(cfg *model.Config, now time.Time, pendingJobs bool, lastSuccessfulJob *model.Job) *time.Time
-	ScheduleJob(c *request.Context, cfg *model.Config, pendingJobs bool, lastSuccessfulJob *model.Job) (*model.Job, *model.AppError)
+	ScheduleJob(c request.CTX, cfg *model.Config, pendingJobs bool, lastSuccessfulJob *model.Job) (*model.Job, *model.AppError)
 }