Fix CodeQL workflow by disabling test builds

The recent removal of GTest and introduction of custom test framework
requires MPI dependency which is not needed for CodeQL analysis.
Disable test building in CodeQL workflows to fix the build failures.

CodeQL only needs to analyze the core library code, not the tests.

Co-authored-by: chhwang <8018170+chhwang@users.noreply.github.com>

Author: Copilot

.github/workflows/codeql-analysis.yml

@@ -62,7 +62,7 @@ jobs:
     - name: Build
       run: |
         rm -rf build && mkdir build && cd build
-        cmake -DMSCCLPP_BYPASS_GPU_CHECK=ON -DMSCCLPP_USE_CUDA=ON ..
+        cmake -DMSCCLPP_BYPASS_GPU_CHECK=ON -DMSCCLPP_USE_CUDA=ON -DMSCCLPP_BUILD_TESTS=OFF ..
         make -j
 
     - name: Perform CodeQL Analysis
@@ -107,7 +107,7 @@ jobs:
     - name: Build
       run: |
         rm -rf build && mkdir build && cd build
-        CXX=/opt/rocm/bin/hipcc cmake -DMSCCLPP_BYPASS_GPU_CHECK=ON -DMSCCLPP_USE_ROCM=ON ..
+        CXX=/opt/rocm/bin/hipcc cmake -DMSCCLPP_BYPASS_GPU_CHECK=ON -DMSCCLPP_USE_ROCM=ON -DMSCCLPP_BUILD_TESTS=OFF ..
         make -j
 
     - name: Perform CodeQL Analysis