TesnsorDomain::allIDs() miss additional IDs introduced by setLoopDomain

[naoyam]

Will add more info. Just a placeholder for now.

• We added initial_domain_ to make sure all IDs are detectable, but when setLoopDomain is called multiple times, the initial IDs that are set at the first call are overwritten by the second call, so the additional IDs by the first call are lost.
• The above issue could be partially addressed by reordering the list of IDs in allIDs here, but that may not be always enough. For example, if a new non-broadcast ID is added as part of a new loop domain, and the ID is resized, traversing from the current loop domain won't find the initial additional ID.