Events and registered commands on TreeView are unreliable when refreshing treeview

<!-- ⚠️⚠️ Do Not Delete This! bug_report_template ⚠️⚠️ --> <!-- Please read our Rules of Conduct: https://opensource.microsoft.com/codeofconduct/ --> <!-- 🕮 Read our guide about submitting issues: https://github.com/microsoft/vscode/wiki/Submitting-Bugs-and-Suggestions --> <!-- 🔎 Search existing issues to avoid creating duplicates. --> <!-- 🧪 Test using the latest Insiders build to see if your issue has already been fixed: https://code.visualstudio.com/insiders/ --> <!-- 💡 Instead of creating your report here, use 'Report Issue' from the 'Help' menu in VS Code to pre-fill useful information. --> <!-- 🔧 Launch with `code --disable-extensions` to check. --> Does this issue occur when all extensions are disabled?: No/unknown, because I need an extension to show the behavior in the first place. <!-- 🪓 If you answered No above, use 'Help: Start Extension Bisect' from Command Palette to try to identify the cause. --> <!-- 📣 Issues caused by an extension need to be reported directly to the extension publisher. The 'Help > Report Issue' dialog can assist with this. --> - VS Code Version: vscode-1.68.1 - OS Version: NixOS, with nixpkgs at revision `95e79164be1f7d883ed9ffda8b7d4ad3a17e6c1e`. Also seen with Ubuntu 20.04. ### Steps to Reproduce: - Create an extension with a tree view as per the basic instructions at https://code.visualstudio.com/api/extension-guides/tree-view - Refresh the tree _very_ often, by using some function like this (this makes it easier to reproduce): ```typescript async function refreshVeryOften(provider: NodeDependenciesProvider) { while (true) { await new Promise(f => setTimeout(f, 10)); // Wait 10ms, or some other small amount of time provider._onDidChangeTreeData.fire(); } } ``` - Register some view actions, as per https://code.visualstudio.com/api/extension-guides/tree-view#view-actions - Let's say we add the `nodeDependencies.editEntry` command and add it to the `view/item/context`…