Add context.Context to more methods (#21546)

This PR adds a context parameter to a bunch of methods. Some helper
`xxxCtx()` methods got replaced with the normal name now.

Co-authored-by: delvh <dev.lh@web.de>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>

services/repository/fork.go

@@ -177,7 +177,7 @@ func ForkRepository(ctx context.Context, doer, owner *user_model.User, opts Fork
 		}
 	}
 
-	notification.NotifyForkRepository(doer, opts.BaseRepo, repo)
+	notification.NotifyForkRepository(ctx, doer, opts.BaseRepo, repo)
 
 	return repo, nil
 }