Fix instrumentation setup

Author: kirklandsign

.ci/scripts/build_android_instrumentation.sh

@@ -12,10 +12,10 @@ if [[ -z "${PYTHON_EXECUTABLE:-}" ]]; then
 fi
 which "${PYTHON_EXECUTABLE}"
 
-mkdir -p "${BUILD_AAR_DIR}"/executorch_android/src/androidTest/resources
-cp extension/module/test/resources/add.pte "${BUILD_AAR_DIR}"/executorch_android/src/androidTest/resources
+mkdir -p extension/android/executorch_android/src/androidTest/resources
+cp extension/module/test/resources/add.pte extension/android/executorch_android/src/androidTest/resources
 
-pushd "${BUILD_AAR_DIR}"
+pushd extension/android
 ANDROID_HOME="${ANDROID_SDK:-/opt/android/sdk}" ./gradlew :executorch_android:testDebugUnitTest
 ANDROID_HOME="${ANDROID_SDK:-/opt/android/sdk}" ./gradlew :executorch_android:assembleAndroidTest
 popd

.github/workflows/_android.yml

@@ -37,7 +37,7 @@ jobs:
 
         mkdir -p ${ARTIFACTS_DIR_NAME}/library_test_dir
         bash .ci/scripts/build_android_instrumentation.sh
-        cp ${BUILD_AAR_DIR}/executorch_android/build/outputs/apk/androidTest/debug/executorch_android-debug-androidTest.apk "${ARTIFACTS_DIR_NAME}/library_test_dir"
+        cp extension/android/executorch_android/build/outputs/apk/androidTest/debug/executorch_android-debug-androidTest.apk "${ARTIFACTS_DIR_NAME}/library_test_dir"
 
         mkdir -p ${ARTIFACTS_DIR_NAME}/fp32-xnnpack-custom
         bash examples/models/llama/install_requirements.sh