Nutshell cleanup wishlist #51

Job	Run time
checks / mypy	39s
checks / ruff	5s
checks / formatting	27s
regtest (3.10, 1.7.1, CoreLightningRestWallet) / regtest	2m 59s
regtest (3.10, 1.7.1, LNbitsWallet) / regtest	2m 40s
regtest (3.10, 1.7.1, LndRestWallet) / regtest	2m 44s
tests (ubuntu-latest, 3.10, 1.7.1, FakeWallet) / poetry	1m 38s
tests (ubuntu-latest, 3.9, 1.7.1, FakeWallet) / poetry	1m 27s
	12m 39s

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