fixes invalid_ids error on Megatron decode function

[Davood-M]

Signed-off-by: David Mosallanezhad [email protected]

What does this PR do ?

fixes invalid_ids error on Megatron decode function by changing invalid tokens to

Collection: NLP

Changelog

• small bug fix

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[michalivne]

@Davood-M @MaximumEntropy PR https://github.com/NVIDIA/NeMo/pull/4210 is fixing this issue.

[github-actions[bot]]

This PR was closed because it has been inactive for 7 days since being marked as stale.