33_readingsGroup.pm: avoid recursion in detailFn if readingGroup contains its own state

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33_readingsGroup.pm: avoid recursion in detailFn if readingGroup contains its own state

33_readingsGroup.pm: avoid recursion in detailFn if readingGroup contains its own stateView Changes

Source: 33_readingsGroup.pm: avoid recursion in detailFn if readingGroup contains its own state