Preserve open documents word wrap settings on restart

<!-- ⚠️⚠️ Do Not Delete This! feature_request_template ⚠️⚠️ --> <!-- Please read our Rules of Conduct: https://opensource.microsoft.com/codeofconduct/ --> <!-- Please search existing issues to avoid creating duplicates. --> <!-- Describe the feature you'd like. --> Currently, when VS Code is restarted (e.g. for extension update, or version update), open documents would lose their word wrap settings after restart. It would be very helpful, if word wrap state for an open documents is preserved.