* - carry existing local-var initializer map into OpaqueBlockLower, reattach it to
generated Allocates and the PrimFunc attrs
- thread the map through FlattenBuffer and StorageRewrite so flattened/merged
allocations keep their tl.local_var_init annotations
- teach annotation handling to accept scalar initializers, resolve buffers, and merge
with existing stat
* lint fix
* enhance
* lint fix
* lint fix