Fix GPU JAR testing on Linux (#27011)

### Description
Fix GPU JAR testing


### Motivation and Context
Testing JAR for GPU was missing libcustom_library.so on Linux.

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: eserscor

tools/ci_build/github/azure-pipelines/templates/final-jar-testing-linux.yml

@@ -63,8 +63,11 @@ stages:
         mavenVersionOption: 'Default'
 
     - task: Bash@3
-      displayName: 'Run Java Tests on Linux/macOS'
-      condition: and(succeeded(), in(variables['Agent.OS'], 'Linux', 'Darwin'))
+      displayName: 'Run Java Tests on Linux'
+#      condition: and(succeeded(), in(variables['Agent.OS'], 'Linux', 'Darwin'))
+      # MacOS packages have been removed from the JAR here:
+      # https://github.com/microsoft/onnxruntime/commit/5ed340f7a51f3cbdb62577a874daf2b3f23d6a93#diff-a14cc5ea231eb4fa49f13510a242043c47ae48516c860f8a87b0e55762632f49
+      condition: and(succeeded(), in(variables['Agent.OS'], 'Linux'))
       inputs:
         targetType: 'inline'
         script: |
@@ -85,7 +88,7 @@ stages:
           ls $(Pipeline.Workspace)/build/tests
           echo "Java Version"
           java -version
-          
+
           # Set the correct library path based on the OS
           os_name=$(uname)
           if [[ "$os_name" == "Linux" ]]; then

tools/ci_build/github/linux/java_linux_final_test.sh

@@ -33,11 +33,13 @@ mkdir tests
 cd tests
 jar xf ../onnxruntime-java/testing.jar
 rm -f ../onnxruntime-java/testing.jar
+echo "Contents of tests directory ($BINARY_DIR/tests):"
+ls "$BINARY_DIR/tests"
 echo "Java Version"
 java -version
 
 echo "Directories created"
 echo  "Library path:" "$LD_LIBRARY_PATH"
 
-java -DUSE_CUDA=1 -cp "$BINARY_DIR/tests:$BINARY_DIR/onnxruntime-java/*" org.junit.platform.console.ConsoleLauncher --scan-classpath=$BINARY_DIR/tests \
+java -DUSE_CUDA=1 -cp "$BINARY_DIR/tests:$BINARY_DIR/onnxruntime-java/*" org.junit.platform.console.ConsoleLauncher --scan-classpath="$BINARY_DIR/tests" \
             --fail-if-no-tests --disable-banner

tools/ci_build/github/windows/jar_packaging.py

@@ -235,9 +235,7 @@ def run_packaging(package_type: str, build_dir: str):
             ]
         },
         "gpu": {
-            "platforms": [
-                {"path": "onnxruntime-java-linux-x64", "lib": "libcustom_op_library.so", "archive_lib": False}
-            ]
+            "platforms": [{"path": "onnxruntime-java-linux-x64", "lib": "libcustom_op_library.so", "archive_lib": True}]
         },
     }