vtsls offers Organize Imports as an edit plus
`_typescript.didOrganizeImports`, a command VS Code's TypeScript
extension runs itself. Optimize Imports in a TypeScript file asked the
servers to resolve and run that command and failed with "no language
server provides command" before applying the edit.
A command that follows a code action's edit and that no server provides
is now skipped: the edit is applied, and resolving the command asks
nothing. An action that is only a command still reports it can't run.