Improve ROCm source install extras (#1243)

## Summary
Update ROCm source install instructions to install ROCm PyTorch wheels
before installing Liger, so `pip install -e .` and `pip install -e
".[dev]"` work without replacing the ROCm torch stack. Align AMD CI with
the same install order and ROCm wheel index.

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- [ ] run `make test` to ensure correctness
- [ ] run `make checkstyle` to ensure code style
- [ ] run `make test-convergence` to ensure convergence

.github/workflows/amd-ci.yml

@@ -7,12 +7,18 @@ on:
     paths:
       - "src/**"
       - "test/**"
+      - "setup.py"
+      - "pyproject.toml"
+      - ".github/workflows/amd-ci.yml"
   pull_request:
     branches:
       - main
     paths:
       - "src/**"
       - "test/**"
+      - "setup.py"
+      - "pyproject.toml"
+      - ".github/workflows/amd-ci.yml"
   merge_group:
     branches:
       - main
@@ -28,7 +34,7 @@ jobs:
     runs-on: linux-mi300-gpu-1
     strategy:
       matrix:
-        rocm_version: ['6.3']
+        rocm_version: ['7.1']
 
     steps:
     - name: Checkout code
@@ -43,8 +49,8 @@ jobs:
       run: |
         rocm-smi
         python -m pip install --upgrade pip
-        pip install -e .[dev]
-        pip3 install --pre torch torchvision torchaudio --index-url https://download.pytorch.org/whl/nightly/rocm${{ matrix.rocm_version }}/
+        pip3 install torch torchvision --index-url https://download.pytorch.org/whl/rocm${{ matrix.rocm_version }}
+        pip install -e ".[dev]"
     
     - name: List Python Environments
       run: python -m pip list