[shape inference] use max_seq_size as max_feature_len in SLS and LengthsRangeFill inference (#36346)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/36346
Reviewed By: yinghai, ipiszy
Differential Revision: D20952490
fbshipit-source-id: ac0e00b47be3fbfa908b84e062c83817dc326924
