Fix b/481469708

[parambole]

Description

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the past.

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FIXES: b/123456
FIXES: #123456

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Tests

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Checklist

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[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/MaxText/layers/multi_token_prediction.py	66.66%	1 Missing ⚠️

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