MM-42412: Skip TestStart/StopWorkers (#19753)

https://mattermost.atlassian.net/browse/MM-42412

```release-note
NONE
```

jobs/server_test.go

@@ -11,6 +11,7 @@ import (
 )
 
 func TestStartWorkers(t *testing.T) {
+	t.Skip("MM-42412")
 	t.Run("uninitialized", func(t *testing.T) {
 		jobServer, _, _ := makeJobServer(t)
 		err := jobServer.StartWorkers()
@@ -43,6 +44,7 @@ func TestStartWorkers(t *testing.T) {
 }
 
 func TestStopWorkers(t *testing.T) {
+	t.Skip("MM-42412")
 	t.Run("uninitialized", func(t *testing.T) {
 		jobServer, _, _ := makeJobServer(t)
 		err := jobServer.StopWorkers()