discourse: 3.4.3 -> 3.4.4

[mweinelt]

https://meta.discourse.org/t/3-4-4-bug-fix-and-ux-release/367301/1

Only plugin to update was discourse-solved, which still fails.
NixOS test currently fails to eval, but a fix is being prepared over in #401991

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• 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/)
• Nixpkgs 25.11 Release Notes (or backporting 24.11 and 25.05 Nixpkgs Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
• NixOS 25.11 Release Notes (or backporting 24.11 and 25.05 NixOS Release notes)
  • (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
• Fits CONTRIBUTING.md.

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[roberth]

Since #411634 this should still work:

@ofborg build nixosTests.discourse

[mweinelt]

I might work since the rebase 30 minutes ago, it didn't when I opened the PR.

[nixpkgs-ci]

Successfully created backport PR for release-25.05:

• [Backport release-25.05] discourse: 3.4.3 -> 3.4.4 #412053