refactor(iroh): remove the addr arg from start #5903

Job	Run time
Checking fmt and docs	1m 32s
Cross compile (i686-unknown-linux-gnu)	3m 9s
Build and test (Windows) (windows-latest, nightly, x86_64-pc-windows-msvc)	13m 2s
Cross compile (armv7-linux-androideabi)	36s
Build and test (Nix) (ubuntu-latest, nightly)	9m 3s
Cross compile (aarch64-linux-android)	38s
cargo deny	28s
Build and test (Nix) (ubuntu-latest, stable)	8m 36s
Build and test (Windows) (windows-latest, stable, x86_64-pc-windows-msvc)	13m 5s
Build and test (Nix) (macOS-arm-latest, nightly)	12m 50s
Build and test (Nix) (macOS-arm-latest, stable)	12m 36s
clippy_check	2m 52s
Minimal Supported Rust Version	1m 44s
Run network simulations/benchmarks	2m 25s
Build release binaries	0s
	1h 22m 36s

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