Let broadcast keep the dtype and device

[cr-xu]

Now broadcasting elements and beams will keep the dtype and device

Description

Motivation and Context

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Types of changes

• Bug fix (non-breaking change which fixes an issue)
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• Breaking change (fix or feature that would cause existing functionality to change)
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Checklist

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• I have updated the tests accordingly (required for a bug fix or a new feature).
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• I have ensured that all pytest tests pass (required).
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