Skip quarantined open_fork_in_web_ide_spec

Skips running quarantined open_fork_in_web_ide_spec test automatically for now while leaving the ability to run it manually on main. There is a known flakiness (see #351009 (closed)) but when the error is slightly different it leads to duplicate failure issues being created (for example, #356992 (closed)). I am going to rewrite this test when we move from Web IDE to VSCode in the coming 1-2 milestones and address any remaining flakiness then.