Oleg Shyshkov 6d82a6fc90 Allow lax.ragged_all_to_all input and output operands to have different ragged dimension sizes.
We need to guaranty that the outermost dimension of the output is big enough to fit all received elements, but it's not necessary for input and output outermost dimensions to be exactly equal.

PiperOrigin-RevId: 707011916
2024-12-17 02:20:10 -08:00
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