ci, iwyu: Request IPC file generation explicitly

Fixes a part of https://github.com/bitcoin/bitcoin/issues/35361.

ci/test/00_setup_env_native_iwyu.sh

@@ -17,7 +17,10 @@ export RUN_FUNCTIONAL_TESTS=false
 export RUN_FUZZ_TESTS=false
 export RUN_CHECK_DEPS=false
 export RUN_IWYU=true
-export GOAL="codegen"
+# Adding non-codegen targets to the build goal is a workaround
+# for https://gitlab.kitware.com/cmake/cmake/-/work_items/27862
+# and https://github.com/bitcoin-core/libmultiprocess/issues/284.
+export GOAL="codegen mp_headers mptest_headers bitcoin_ipc_headers bitcoin_ipc_test_headers bitcoin_ipc_fuzz_headers"
 export BITCOIN_CONFIG="\
  --preset dev-mode -DBUILD_GUI=OFF \
  -DCMAKE_C_COMPILER=clang-${IWYU_LLVM_V} \

ci/test/03_test_script.sh

@@ -123,7 +123,7 @@ cmake -S "$BASE_ROOT_DIR" -B "$BASE_BUILD_DIR" "${CMAKE_ARGS[@]}" || (
   false
 )
 
-if [[ "${GOAL}" != all && "${GOAL}" != codegen ]]; then
+if [[ "${GOAL}" != all && "${GOAL}" != *codegen* ]]; then
   GOAL="all ${GOAL}"
 fi