Fix torch version to make torchrec CI tests work (#3211)

Summary:

Fix torch version to make torchrec CI tests work

Rollback Plan:

Differential Revision: D78564722

Author: nipung90

.github/workflows/docs.yml

@@ -59,7 +59,7 @@ jobs:
     - name: Install PyTorch
       shell: bash
       run: |
-        conda run -n build_binary pip install torch --index-url https://download.pytorch.org/whl/nightly/cpu
+        conda run -n build_binary pip install torch==2.9.0.dev20250716+cpu --index-url https://download.pytorch.org/whl/nightly/cpu
     - name: Install fbgemm
       run: |
         conda run -n build_binary pip install fbgemm-gpu --index-url https://download.pytorch.org/whl/nightly/cpu

.github/workflows/unittest_ci.yml

@@ -77,7 +77,7 @@ jobs:
         python --version
         conda run -n build_binary python --version
         conda run -n build_binary \
-          pip install torch --index-url https://download.pytorch.org/whl/nightly/${{ matrix.cuda-tag }}
+          pip install torch==2.9.0.dev20250716+${{ matrix.cuda-tag }} --index-url https://download.pytorch.org/whl/nightly/${{ matrix.cuda-tag }}
         conda run -n build_binary \
           python -c "import torch"
         echo "torch succeeded"

.github/workflows/unittest_ci_cpu.yml

@@ -61,7 +61,7 @@ jobs:
         python --version
         conda run -n build_binary python --version
         conda run -n build_binary \
-          pip install torch --index-url https://download.pytorch.org/whl/nightly/cpu
+          pip install torch==2.9.0.dev20250716+cpu --index-url https://download.pytorch.org/whl/nightly/cpu
         conda run -n build_binary \
           python -c "import torch"
         echo "torch succeeded"