Merge bitcoindevkit/bdk#1616: feat(wallet)!: enable RBF by default on… #6128

Job	Run time
Check no_std	27s
Build & Test Examples (example_cli)	20s
Build and test (stable, true, --no-default-features)	1m 58s
Build & Test Examples (example_bitcoind_rpc_polling)	31s
Build & Test Examples (example_electrum)	49s
Build and test (stable, true, --all-features)	3m 57s
Check WASM	56s
Build & Test Examples (example_esplora)	46s
Rust fmt	9s
Build and test (1.63.0, --no-default-features)	3m 1s
Build & Test Examples (example_wallet_electrum)	50s
Build and test (1.63.0, --all-features)	5m 6s
Build & Test Examples (example_wallet_esplora_async)	51s
prepare	3s
Build & Test Examples (example_wallet_esplora_blocking)	49s
Build & Test Examples (example_wallet_rpc)	52s
clippy_check	1m 3s
	22m 28s

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