jetbrains.jcef: 675 -> 766

[niknetniko]

Description of changes

Bump JCEF to the required version for the 2024.1 versions (updated in #301635).

I added a patch to disable calling vcpkg for some remote dev stuff.
I couldn't get it to work quickly, but someone else is certainly welcome to fix it.

Additionally, the logs show lines like:

ERR: Display.cpp:1052 (initialize): ANGLE Display::initialize error 12289: Could not dlopen libGL.so.1: libGL.so.1: cannot open shared object file: No such file or directory

I tried a few things (like some changes from our CEF build), but to no avail. Everything I usually check for JCEF (e.g. the markdown preview) seems to work despite these error messages, so perhaps they are not relevant.

Pinging @GenericNerdyUsername, since you have done a lot of work on this in the past.

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/)
• 24.05 Release Notes (or backporting 23.05 and 23.11 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
• Fits CONTRIBUTING.md.

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[niknetniko]

Closing in favour of #309447