[UPGRADE] run sanity checks before the database is upgraded

https://codeberg.org/forgejo/forgejo/pulls/1543
(cherry picked from commit fbb71f464b)
(cherry picked from commit 650f849c84)
(cherry picked from commit 25e0d33dfe)
(cherry picked from commit 222b70e504)
(cherry picked from commit 4be04627a7)
(cherry picked from commit 64fcb25de3)
(cherry picked from commit 740943d6b0)
(cherry picked from commit 3c096abf11)
(cherry picked from commit da04dcb099)
(cherry picked from commit b881d83f1c)
(cherry picked from commit 7e7492b996)

services/forgejo/main_test.go

@@ -3,7 +3,6 @@
 package forgejo
 
 import (
-	"path/filepath"
 	"testing"
 
 	"code.gitea.io/gitea/models/unittest"
@@ -14,7 +13,5 @@ import (
 )
 
 func TestMain(m *testing.M) {
-	unittest.MainTest(m, &unittest.TestOptions{
-		GiteaRootPath: filepath.Join("..", ".."),
-	})
+	unittest.MainTest(m)
 }