Sync #embed behavior with #include #120

Job	Run time
docker	1m 10s
thirdparty-tests (test_perl)	10m 26s
thirdparty-tests (test_cello)	16s
thirdparty-tests (test_curl)	9m 5s
thirdparty-tests (test_doom)	23s
thirdparty-tests (test_git)	18m 14s
thirdparty-tests (test_libpng)	2m 10s
thirdparty-tests (test_libuev)	38s
thirdparty-tests (test_lua)	27s
thirdparty-tests (test_metalang99)	41s
thirdparty-tests (test_oniguruma_jq)	1m 7s
thirdparty-tests (test_openssh)	4m 56s
thirdparty-tests (test_openssl)	16m 33s
thirdparty-tests (test_php)	6m 40s
thirdparty-tests (test_postgres)	3m 54s
thirdparty-tests (test_python)	26m 5s
thirdparty-tests (test_qbe_hare)	24s
thirdparty-tests (test_sqlite)	3m 26s
thirdparty-tests (test_tinycc)	20s
thirdparty-tests (test_toxcore)	4m 45s
thirdparty-tests (test_toybox)	51s
thirdparty-tests (test_vim)	1m 50s
thirdparty-tests (test_zlib)	15s
thirdparty-tests (test_zstd)	1m 31s
thirdparty-tests (build_gcc)	8m 48s
thirdparty-tests (build_musl)	1m 21s
thirdparty-tests (build_nano)	59s
thirdparty-tests (build_sdl)	1m 36s
thirdparty-tests (build_zig)	8m 55s
	2h 17m 46s

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