AuthN: add flag for org roles sync (#63507)

* AuthN: Add flag to control org role syncs

* JWT: Only sync org roles if the skip flag for jwt is false

* LDAP: Only sync org role if skip flag for ldap is false

* OAuth: Skip org roles sync if no roles were provided by upstream service

* Grafana: Set SyncOrgRoles to true for authentication through proxy with grafana as backend

pkg/services/authn/authnimpl/sync/org_sync.go

@@ -25,7 +25,7 @@ type OrgSync struct {
 }
 
 func (s *OrgSync) SyncOrgRolesHook(ctx context.Context, id *authn.Identity, _ *authn.Request) error {
-	if !id.ClientParams.SyncUser {
+	if !id.ClientParams.SyncOrgRoles {
 		return nil
 	}