Build EXTENSION_DATA_LOADER with size_test (#12678)

size_test.cpp uses FileDataLoader. Looks like this happens to work
currently because of the missing cmake_deps.toml entry that gets fixed
in #12744

Author: swolchok

test/build_size_test.sh

@@ -6,7 +6,7 @@
 # LICENSE file in the root directory of this source tree.
 
 # Build size_test and show the size of it
-set -e
+set -ex
 
 # shellcheck source=/dev/null
 source "$(dirname "${BASH_SOURCE[0]}")/../.ci/scripts/utils.sh"
@@ -23,11 +23,17 @@ cmake_install_executorch_lib() {
   update_tokenizers_git_submodule
   local EXTRA_BUILD_ARGS="${@}"
 
+  if [[ "$EXTRA_BUILD_ARGS" == *"-DEXECUTORCH_BUILD_ARM_BAREMETAL=ON"* ]]; then
+      local BUILD_DATA_LOADER="OFF"
+  else
+      local BUILD_DATA_LOADER=ON
+  fi
   CXXFLAGS="$COMMON_CXXFLAGS" retry cmake -DBUCK2="$BUCK2" \
           -DCMAKE_CXX_STANDARD_REQUIRED=ON \
           -DCMAKE_INSTALL_PREFIX=cmake-out \
           -DCMAKE_BUILD_TYPE=Release \
           -DEXECUTORCH_BUILD_EXECUTOR_RUNNER=OFF \
+          -DEXECUTORCH_BUILD_EXTENSION_DATA_LOADER=${BUILD_DATA_LOADER} \
           -DEXECUTORCH_OPTIMIZE_SIZE=ON \
           -DPYTHON_EXECUTABLE="$PYTHON_EXECUTABLE" \
           ${EXTRA_BUILD_ARGS} \

tools/cmake/preset/default.cmake

@@ -249,7 +249,7 @@ check_required_options_on(
 
 check_conflicting_options_on(
   IF_ON EXECUTORCH_BUILD_ARM_BAREMETAL CONFLICTS_WITH
-  EXECUTORCH_BUILD_EXTENSION_DATA_LOADER EXECUTORCH_BUILD_PTHREADPOOL
+  EXECUTORCH_BUILD_PTHREADPOOL
   EXECUTORCH_BUILD_CPUINFO
 )