Handle host ports with emulator tests #777

Job	Run time
build (stellar-cli, stellar, ubuntu-20.04, x86_64-unknown-linux-gnu)	10m 12s
build (stellar-cli, stellar, ubuntu-20.04, aarch64-unknown-linux-gnu)	10m 13s
build (stellar-cli, stellar, macos-14, x86_64-apple-darwin)	10m 7s
build (stellar-cli, stellar, macos-12, aarch64-apple-darwin)	10m 15s
build (stellar-cli, stellar, windows-latest, x86_64-pc-windows-msvc, .exe)	10m 6s
build (soroban-cli, soroban, ubuntu-20.04, x86_64-unknown-linux-gnu)	10m 13s
build (soroban-cli, soroban, ubuntu-20.04, aarch64-unknown-linux-gnu)	10m 13s
build (soroban-cli, soroban, macos-14, x86_64-apple-darwin)	9m 59s
build (soroban-cli, soroban, macos-12, aarch64-apple-darwin)	10m 14s
build (soroban-cli, soroban, windows-latest, x86_64-pc-windows-msvc, .exe)	10m 7s
	1h 41m 39s

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