compiler: Fix bug in snapshotting #15858

Job	Run time
node_test (ubuntu-22.04)	3m 0s
cpp_test_driver (ubuntu-22.04)	6m 22s
node_test (macos-12)	3m 48s
cpp_test_driver (macos-12)	5m 2s
node_test (windows-2022)	13m 1s
cpp_test_driver (windows-2022)	8m 7s
android	1m 41s
build_and_test (ubuntu-22.04, 1.73)	13m 5s
build_and_test (macos-12, stable)	18m 5s
cpp_cmake (macos-12, 1.73)	15m 36s
build_and_test (windows-2022, stable)	13m 46s
esp-idf-quick	8m 36s
cpp_cmake (windows-2022, nightly)	8m 54s
build_and_test (windows-2022, 1.73)	20m 24s
ffi_32bit_build	59s
cpp_cmake (ubuntu-22.04, stable)	6m 44s
build_and_test (windows-2022, beta, --exclude ffmpeg --exclude gstreamer-player)	21m 8s
build_and_test (ubuntu-22.04, nightly)	9m 21s
fmt_test	1m 44s
mcu (pico-st7789, thumbv6m-none-eabi)	34s
mcu (stm32h735g, thumbv7em-none-eabihf)	33s
mcu_esp	2m 28s
miri	49s
python_test (ubuntu-22.04)	1m 40s
python_test (macos-12)	2m 8s
uefi-demo	1m 19s
updater_test (0.3.0)	1m 32s
python_test (windows-2022)	3m 24s
docs / docs	1m 2s
tree-sitter / tree-sitter-tests	13s
wasm / wasm	4m 22s
wasm_demo / wasm_demo	14m 35s
wasm / build-slintpad	45s
wasm / lint-slintpad	22s
cpp_package_test	2m 43s
	3h 37m 52s

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