[CI] Pin transformers<4.53.0 and fix EPLB load_weights to make CI passed

[MengqingCao]

What this PR does / why we need it?

• Fix vLLM EPLB break vllm-project/vllm@e9fd658 by recovering load_weights back to v0.9.1 version temporarily.

• Fix transformers>=4.53.0 image processor break
  Related: TypeError: Qwen2_5_VLProcessor.__init__() got multiple values for argument 'image_processor' #1470

• Mirror torch_npu requirements to pyproject.toml

Does this PR introduce any user-facing change?

No

How was this patch tested?

CI passed

[Yikun]

LGTM if CI all passed

[codecov]

Codecov Report

Attention: Patch coverage is 8.41121% with 98 lines in your changes missing coverage. Please review.

Project coverage is 31.65%. Comparing base (c30ddb8) to head (6dedd47).
Report is 38 commits behind head on main.

Files with missing lines	Patch %	Lines
vllm_ascend/models/deepseek_dbo.py	9.25%	49 Missing ⚠️
vllm_ascend/models/deepseek_v2.py	7.54%	49 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1482      +/-   ##
==========================================
+ Coverage   27.39%   31.65%   +4.25%     
==========================================
  Files          56       60       +4     
  Lines        6191     6638     +447     
==========================================
+ Hits         1696     2101     +405     
- Misses       4495     4537      +42     

Flag	Coverage Δ
unittests	31.65% <8.41%> (+4.25%)	⬆️

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[Yikun]

Cosider we passed all multi card test with no code changes in #1485 to recover CI.

[1] https://github.com/vllm-project/vllm-ascend/actions/runs/15929963209/job/44936486165?pr=1485

cc @wangxiyuan @ganyi1996ppo @jianzs