relax seq len checking in rotary_emb (#20778)
### Description
Length checking is even more strict for packed batching input.
There are two cases for a batch of input_ids.
- padded seq with equal length of inputs.
```
|----********|
|------------|
|--------****|
|-***********|
```
- packed seqs with different length of input_ids
`|----|---------|----|-|`
The max_seq_length is either from graph_inputs or the position_ids.
While in most of cases, we will cache the max_seq_length of rotary_cache
in the model ans shared among all layers.
### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->
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Co-authored-by: kailums <kalu@microsoft.com>
