[XPU][UT] Align HF and vLLM inputs for Qwen2 embedding test by preventing Sentence Transformers from applying chat template (#58117)

Signed-off-by: RyanMa29 <ziyang.ma@intel.com>

requirements/test/xpu.in

@@ -38,6 +38,7 @@ jiwer
 bm25s
 pystemmer
 mteb[bm25s]>=2, <3 # required for mteb test
+sentence-transformers==5.2.0 # required for embedding tests
 num2words
 pqdm
 

requirements/test/xpu.txt

@@ -540,7 +540,6 @@ numpy==2.2.6
     #   sacrebleu
     #   scikit-learn
     #   scipy
-    #   sentence-transformers
     #   soundfile
     #   soxr
     #   tensorizer
@@ -936,8 +935,10 @@ scipy==1.18.0
     #   pytrec-eval-terrier
     #   scikit-learn
     #   sentence-transformers
-sentence-transformers==5.7.0
-    # via mteb
+sentence-transformers==5.2.0
+    # via
+    #   -r requirements/test/xpu.in
+    #   mteb
 sentencepiece==0.2.1
     # via -r requirements/test/../common.txt
 sentry-sdk==2.68.0
@@ -1047,7 +1048,6 @@ tokenizers==0.23.1
     #   -c requirements/common.txt
     #   -r requirements/test/../common.txt
     #   cohere
-    #   sentence-transformers
     #   transformers
 torch==2.14.0+xpu
     # via