enforce explanation for necessary nolints and fix bugs (#34883)

Follows up https://github.com/go-gitea/gitea/pull/34851

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

tests/e2e/e2e_test.go

@@ -4,7 +4,7 @@
 // This is primarily coped from /tests/integration/integration_test.go
 //   TODO: Move common functions to shared file
 
-//nolint:forbidigo
+//nolint:forbidigo // use of print functions is allowed in tests
 package e2e
 
 import (