The ClusterInfo may support a group id, the iterator should be able to call grou...

[todo]

connectedhomeip/src/app/AttributePathExpandIterator.h

Lines 67 to 77 in 5fedfa7

	* TODO: The ClusterInfo may support a group id, the iterator should be able to call group data provider to expand the group id.
	*/
	class AttributePathExpandIterator
	{
	public:
	AttributePathExpandIterator(ClusterInfo * aClusterInfo);
	/**
	* Proceed the iterator to the next attribute path in the given cluster info.
	*
	* Returns false if AttributePathExpandIterator has exhausted all paths in the given ClusterInfo list.

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This issue was generated by todo based on a TODO comment in 5fedfa7 when #11303 was merged. cc @erjiaqing.