Fix Linux python CUDA package pipeline (microsoft#22803)

### Description
Making ::p optional in the Linux python CUDA package pipeline



### Motivation and Context
Linux stage from Python-CUDA-Packaging-Pipeline has failed since merge
of microsoft#22773

tools/ci_build/github/linux/build_linux_python_package.sh

@@ -9,13 +9,27 @@ EXTRA_ARG=""
 ENABLE_CACHE=false
 # Put 3.10 at the last because Ubuntu 22.04 use python 3.10 and we will upload the intermediate build files of this
 # config to Azure DevOps Artifacts and download them to a Ubuntu 22.04 machine to run the tests.
-PYTHON_EXES=("/opt/python/cp311-cp311/bin/python3.11" "/opt/python/cp312-cp312/bin/python3.12" "/opt/python/cp313-cp313/bin/python3.13" "/opt/python/cp313-cp313t/bin/python3.13t" "/opt/python/cp310-cp310/bin/python3.10")
+PYTHON_EXES=(
+  "/opt/python/cp311-cp311/bin/python3.11"
+  "/opt/python/cp312-cp312/bin/python3.12"
+  "/opt/python/cp313-cp313/bin/python3.13"
+  "/opt/python/cp313-cp313t/bin/python3.13t"
+  "/opt/python/cp310-cp310/bin/python3.10"
+  )
 while getopts "d:p:x:c:e" parameter_Option
 do case "${parameter_Option}"
 in
 #GPU|CPU|NPU.
 d) BUILD_DEVICE=${OPTARG};;
-p) PYTHON_EXES=("${OPTARG}");;
+p)
+  # Check if OPTARG is empty or starts with a hyphen, indicating a missing or invalid argument for -p
+  if [[ -z "${OPTARG}" || "${OPTARG}" == -* ]]; then
+    echo "ERROR: Option -p requires a valid argument, not another option."
+    exit 1
+  else
+    PYTHON_EXES=("${OPTARG}") # Use the provided argument for -p
+  fi
+  ;;
 x) EXTRA_ARG=${OPTARG};;
 c) BUILD_CONFIG=${OPTARG};;
 e) ENABLE_CACHE=true;;