[Fix][Relax] Track lowered reshape storage aliases

[akaashrp]

StaticPlanBlockMemory tracks relax.reshape as an alias of its input storage, but did not recognize direct calls to vm.builtin.reshape. DispatchSortScan emits these packed reshape calls before static memory planning. Without alias tracking, the planner could reuse the input storage while the reshaped view was still live, allowing later allocations to overwrite its contents.

This PR:

• Recognizes vm.builtin.reshape as a storage-aliasing operation
• Preserves the input storage token through the reshape result
• Updates the dynamic-output expected IR for the corrected planning path