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Describe the current behavior / 问题描述 (Mandatory / 必填)

当bucketize算子的boudaries属性为空时，BucketizeFussionPass获取boundaries失败时依然路由到bucketizev2，创建boudaries tensor时失败

Environment / 环境信息 (Mandatory / 必填)

Ascend950PR

Steps to reproduce the issue / 重现步骤 (Mandatory / 必填)

tf通路，bucketize算子boudaries属性为空

Describe the expected behavior / 预期结果 (Mandatory / 必填)

功能精度正常

Related log / screenshot / 日志 / 截图 (Mandatory / 必填)

Special notes for this issue/备注 (Optional / 选填)