Disable fp64 dynamic slice test

[hsharsha]

This is because AMD does not support MLIR dialect lowering
https://github.com/openxla/xla/blob/main/xla/service/gpu/fusions/fusions.cc#L158-L161

      if (check_mlir_emitters(/*required_level=*/1)) {
        return std::make_unique<MlirLoopFusion>(analysis);
      }
      return std::make_unique<LoopFusion>(analysis);

For NVIDIA it emits std::make_unique<MlirLoopFusion>(analysis) and for AMD std::make_unique<LoopFusion>(analysis)

If we emit std::make_unique<LoopFusion>(analysis) for NVIDIA it also fails with similar signature.

[i-chaochen]

thanks!