Add coverage for all scenarios to actual_state_calculator_spec.rb

Address TODO:

ee/spec/lib/remote_development/workspaces/reconcile/actual_state_calculator_spec.rb

          # TODO: These are currently taken from only the currently supported cases in
          #       remote_development_shared_contexts.rb#create_workspace_agent_info,
          #       but we should ensure they are providing full and
          #       realistic coverage of all possible relevant states.
          #       Note that `nil` is passed when the argument will not be used by
          #       remote_development_shared_contexts.rb