Merge bitcoindevkit/bdk#1734: chore(chain)!: use `debug_assert!` on `… #6346

Job	Run time
Build & Test Examples (example_cli)	34s
Build and test (stable, true, --no-default-features --features miniscript/no-std)	2m 14s
Build & Test Examples (example_bitcoind_rpc_polling)	41s
Check no_std	57s
Build and test (stable, true, --all-features)	3m 54s
Build & Test Examples (example_electrum)	46s
Build & Test Examples (example_esplora)	1m 4s
Build and test (1.63.0, --no-default-features --features miniscript/no-std)	3m 13s
Build & Test Examples (example_wallet_electrum)	48s
Build and test (1.63.0, --all-features)	5m 19s
Check WASM	1m 10s
Build & Test Examples (example_wallet_esplora_async)	1m 9s
Build & Test Examples (example_wallet_esplora_blocking)	55s
prepare	3s
Rust fmt	5s
Build & Test Examples (example_wallet_rpc)	37s
clippy_check	47s
	24m 16s

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