inductor: sort the reads buf by name (#89744)
Sort `read_writes.reads` by name to make sure the same graph is generated for a fixed model. Otherwise, the buffer reuse may be different since the order of `read_writes.reads` is random.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/89744
Approved by: https://github.com/jgong5, https://github.com/jansel
