[CI] Pin transformers<4.53.0 and fix EPLB load_weights to make CI passed (#1482)

### What this PR does / why we need it?

- Fix vLLM EPLB break
e9fd658a73
by recovering load_weights back to [v0.9.1
version](07b8fae219)
temporarily.

- Fix transformers>=4.53.0 image processor break
Related: https://github.com/vllm-project/vllm-ascend/issues/1470

- Mirror torch_npu requirements to pyproject.toml

### Does this PR introduce _any_ user-facing change?
No

### How was this patch tested?
CI passed

---------

Signed-off-by: MengqingCao <cmq0113@163.com>
Signed-off-by: Yikun Jiang <yikunkero@gmail.com>
Co-authored-by: Yikun Jiang <yikunkero@gmail.com>

pyproject.toml

@@ -12,12 +12,14 @@ requires = [
     "scipy",
     "setuptools>=64",
     "setuptools-scm>=8",
-    "torch-npu==2.5.1.post1.dev20250528",
+    "torch-npu==2.5.1.post1.dev20250619",
     "torch>=2.5.1",
     "torchvision<0.21.0",
     "wheel",
     "msgpack",
     "quart",
     "numba",
+    # Remove after https://github.com/vllm-project/vllm-ascend/issues/1470
+    "transformers<4.53.0",
 ]
 build-backend = "setuptools.build_meta"