[xla-auto-sharding] Add call path for non-MIP heuristic solvers. #20145
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Notes: - Add public `RunHeuristicSolver()` executor function. - Add `SolveTrivial()` baseline that assigns all nodes to their first sharding strategy. If infeasible (e.g., violated the peak-memory constraint), output a negative cost encoding the violation code. PiperOrigin-RevId: 702825456
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[xla-auto-sharding] Add call path for non-MIP heuristic solvers.
Notes:
RunHeuristicSolver()executor function.SolveTrivial()baseline that assigns all nodes to their first sharding strategy. If infeasible (e.g., violated the peak-memory constraint), output a negative cost encoding the violation code.