Reapply "Set SDK_V9=0 in sample app dev build"

This reverts commit d0f56da.

Author: antonis

.github/workflows/sample-application.yml

@@ -135,6 +135,14 @@ jobs:
         run: |
           [[ "${{ matrix.build-type }}" == "production" ]] && CONFIG='Release' || CONFIG='Debug'
           echo "Building $CONFIG"
+
+          # Set preprocessor flags for dev builds
+          if [[ "${{ matrix.build-type }}" == "dev" ]]; then
+            EXTRA_FLAGS="GCC_PREPROCESSOR_DEFINITIONS=\$(inherited) SDK_V9=0"
+          else
+            EXTRA_FLAGS=""
+          fi
+
           mkdir -p "DerivedData"
           derivedData="$(cd "DerivedData" ; pwd -P)"
           set -o pipefail && xcodebuild \
@@ -145,6 +153,7 @@ jobs:
             -destination 'generic/platform=iOS Simulator' \
             ONLY_ACTIVE_ARCH=yes \
             -derivedDataPath "$derivedData" \
+            $EXTRA_FLAGS \
             build \
             | tee xcodebuild.log \
             | xcbeautify --quieter --is-ci --disable-colored-output