Chore: Make Cfg field private in SQLStore (#85593)

* make cfg private in sqlstore

* fix db init in tests

* fix case

* fix folder test init

* fix imports

* make another Cfg private

* remove another Cfg

* remove unused variable

* use store cfg, it has side-effects

* fix mutated cfg in tests

pkg/api/org_users_test.go

@@ -27,6 +27,7 @@ import (
 	"github.com/grafana/grafana/pkg/services/org/orgimpl"
 	"github.com/grafana/grafana/pkg/services/org/orgtest"
 	"github.com/grafana/grafana/pkg/services/quota/quotaimpl"
+	"github.com/grafana/grafana/pkg/services/sqlstore"
 	"github.com/grafana/grafana/pkg/services/supportbundles/supportbundlestest"
 	"github.com/grafana/grafana/pkg/services/user"
 	"github.com/grafana/grafana/pkg/services/user/userimpl"
@@ -61,8 +62,7 @@ func TestOrgUsersAPIEndpoint_userLoggedIn(t *testing.T) {
 	hs := setupSimpleHTTPServer(featuremgmt.WithFeatures())
 	settings := hs.Cfg
 
-	sqlStore := db.InitTestDB(t)
-	sqlStore.Cfg = settings
+	sqlStore := db.InitTestDB(t, sqlstore.InitTestDBOpt{Cfg: settings})
 	hs.SQLStore = sqlStore
 	orgService := orgtest.NewOrgServiceFake()
 	orgService.ExpectedSearchOrgUsersResult = &org.SearchOrgUsersQueryResult{}