Add Temperature to WhisperBeamSearch input (#19188)
### Description
<!-- Describe your changes. -->
Add `temperature` as an input to WhisperBeamSearch op and initialize
correctly in parameter setup.
### Motivation and Context
Currently, temperature is included as an attribute to the BeamSearch op,
which doesn't let the model act dynamically in a single inference
session. By including this variable as an input, the temperature value
can be altered in any inference call (important for 1P teams)
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Co-authored-by: Peter McAughan <petermca@microsoft.com>
Co-authored-by: kunal-vaishnavi <115581922+kunal-vaishnavi@users.noreply.github.com>
Co-authored-by: Kunal Vaishnavi <kvaishnavi@microsoft.com>
