Backport #22467Fix#22370 and more.
Before Go 1.19, the `netgo` tag for Windows does nothing.
But Go 1.19 rewrite the net package code for Windows DNS, and there is a
bug:
* https://github.com/golang/go/issues/57757
This PR just removes the `netgo` tag for Windows build, then the Gitea
for Windows can have the old DNS behavior.