Treat connection close during stop() as handled#1782
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We've hit a case where our
closed()handler, meant to prevent user-visible toast notifications, was not invoked by languageclient. Our Linux users (likely due to some weird platform-specific race) consistently see a toast notification on restart due to this (posit-dev/positron#7593).I think this is because the
closed()handler is not called when the client is already stopping: https://github.com/lionel-/vscode-languageserver-node/blob/f5e23e29b76c42fad882aa84933d46ba9b412183/client/src/common/client.ts#L1827-L1833. This prevents our handler from settinghandledtotrue.The fix proposed here is to treat a client that's already stopping as "handled", this way a toast notification isn't displayed.