python310Packages.pyopenssl: unbreak on aarch64-darwin

[tjni]

This also reenables tests on Darwin. If the tests end up being flaky again, let's disable them individually (if we can't fix them).

I've disabled three tests that fail on my aarch64-darwin machine which didn't fail on an x86_64-darwin VM. Experimenting locally suggests that it's more related to assumptions made in the tests on how SSL handshake should be done than any actual real issue. I've reached out to the maintainers on IRC separately to try to resolve this properly upstream.

This is a follow up to #187636.

Description of changes

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandbox = true set in nix.conf? (See Nix manual)
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 23.05 Release Notes (or backporting 22.11 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
  • (Release notes changes) Ran nixos/doc/manual/md-to-db.sh to update generated release notes
• Fits CONTRIBUTING.md.