[CI][BugFix] ShellCheck cleanup to remove baseline and preserve runtime behavior (#34514)

Signed-off-by: junuxyz <216036880+junuxyz@users.noreply.github.com>

tools/ep_kernels/elastic_ep/install_eep_libraries.sh

@@ -23,7 +23,7 @@ while getopts "w:n" opt; do
 done
 
 if [ ! -d "$WORKSPACE" ]; then
-    mkdir -p $WORKSPACE
+    mkdir -p "$WORKSPACE"
 fi
 
 
@@ -31,7 +31,7 @@ fi
 pip3 install cmake torch ninja
 
 # build nvshmem
-pushd $WORKSPACE
+pushd "$WORKSPACE"
 # Reset NVSHMEM build if requested
 if [ "$INSTALL_NVSHMEM" = true ]; then
     mkdir -p nvshmem_src
@@ -69,15 +69,15 @@ export NVSHMEM_BUILD_HYDRA_LAUNCHER=0
 export NVSHMEM_BUILD_TXZ_PACKAGE=0
 export NVSHMEM_TIMEOUT_DEVICE_POLLING=0
 
-cmake -G Ninja -S . -B $WORKSPACE/nvshmem_build/ -DCMAKE_INSTALL_PREFIX=$WORKSPACE/nvshmem_install
-cmake --build $WORKSPACE/nvshmem_build/ --target install
+cmake -G Ninja -S . -B "$WORKSPACE"/nvshmem_build/ -DCMAKE_INSTALL_PREFIX="$WORKSPACE"/nvshmem_install
+cmake --build "$WORKSPACE"/nvshmem_build/ --target install
 
 popd
 
 export CMAKE_PREFIX_PATH=$WORKSPACE/nvshmem_install:$CMAKE_PREFIX_PATH
 
 # build and install pplx, require pytorch installed
-pushd $WORKSPACE
+pushd "$WORKSPACE"
 git clone https://github.com/ppl-ai/pplx-kernels
 cd pplx-kernels
 # see https://github.com/pypa/pip/issues/9955#issuecomment-838065925