fix(chain,wallet): Provide unconfirmed spends to chain src sync request #287

Job	Run time
prepare	4s
Check WASM	1m 16s
Check no_std	49s
Build & Test Examples (example_cli)	46s
Build and test (1.83.0, true, --no-default-features --features miniscript/no-std)	2m 48s
Build & Test Examples (example_bitcoind_rpc_polling)	46s
clippy_check	1m 44s
Build and test (1.83.0, true, --all-features)	4m 12s
Rust fmt	11s
Build & Test Examples (example_electrum)	1m 0s
Build and test (1.63.0, --no-default-features --features miniscript/no-std)	5m 6s
Build & Test Examples (example_esplora)	1m 1s
Build and test (1.63.0, --all-features)	6m 28s
Build & Test Examples (example_wallet_electrum)	59s
Build & Test Examples (example_wallet_esplora_async)	1m 7s
Build & Test Examples (example_wallet_esplora_blocking)	1m 0s
Build & Test Examples (example_wallet_rpc)	57s
	30m 14s

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