Fix triton model bug

[sre-ci-robot]

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This pull-request has been approved by: junjiejiangjjj

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[codecov[bot]]

Codecov Report

Patch coverage: 50.00% and project coverage change: -0.03% :warning:

Comparison is base (e268079) 76.01% compared to head (f7b49d3) 75.99%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #2662 +/- ## ========================================== - Coverage 76.01% 75.99% -0.03% ========================================== Files 407 407 Lines 20820 20821 +1 Branches 2763 2763 ========================================== - Hits 15826 15822 -4 - Misses 4104 4109 +5 Partials 890 890 ``` | [Files Changed](https://app.codecov.io/gh/towhee-io/towhee/pull/2662?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=towhee-io) | Coverage Δ | | |---|---|---| | [towhee/utils/triton\_httpclient.py](https://app.codecov.io/gh/towhee-io/towhee/pull/2662?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=towhee-io#diff-dG93aGVlL3V0aWxzL3RyaXRvbl9odHRwY2xpZW50LnB5) | `26.66% <0.00%> (-33.34%)` | :arrow_down: | | [towhee/serve/triton/bls/pipeline\_model.py](https://app.codecov.io/gh/towhee-io/towhee/pull/2662?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=towhee-io#diff-dG93aGVlL3NlcnZlL3RyaXRvbi9ibHMvcGlwZWxpbmVfbW9kZWwucHk=) | `81.48% <100.00%> (+0.34%)` | :arrow_up: |

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[wxywb]

/lgtm