Fix unintended environment variable config passthrough to services (#… #589

Job	Run time
amd64 / build-stellar-core	18m 36s
amd64 / build-rs-stellar-xdr	7m 25s
amd64 / build-stellar-friendbot	47s
amd64 / build-stellar-horizon	2m 22s
amd64 / build-stellar-soroban-rpc	5m 11s
arm64 / build-stellar-horizon	7m 58s
arm64 / build-stellar-core	1h 16m 22s
arm64 / build-rs-stellar-xdr	58m 28s
arm64 / build-stellar-friendbot	4m 39s
arm64 / build-stellar-soroban-rpc	21m 28s
amd64 / build	4m 41s
amd64 / test (pubnet)	1m 20s
amd64 / test (local)	1m 33s
amd64 / push-pr	0s
amd64 / test (local, --enable-soroban-rpc)	1m 44s
amd64 / push-release	45s
arm64 / build	7m 50s
arm64 / test (pubnet)	1m 13s
arm64 / test (local)	2m 45s
arm64 / test (local, --enable-soroban-rpc)	2m 52s
arm64 / push-pr	0s
arm64 / push-release	53s
manifest / push	10s
complete	1s
	3h 49m 3s

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