fix: fee rate was not parsed correctly #6356

Job	Run time
10101 node tests	8m 48s
lint-commits	7s
formatting-dprint	14s
generate-ffi	6m 12s
Format and lint Flutter code	57s
clippy	6m 18s
payout-curve	5m 27s
e2e_tests_prepare	8m 34s
unit-tests	11m 22s
e2e-tests (./target/debug/deps/e2e_basic-1a8e93bed48b301a)	5m 12s
e2e-tests (./target/debug/deps/e2e_close_position-fe7288972d02833f)	6m 32s
e2e-tests (./target/debug/deps/e2e_collaborative_close_channel-f8a5a7ab7ef4bed3)	5m 43s
e2e-tests (./target/debug/deps/e2e_collaborative_revert-cab83a768d91a940)	6m 11s
e2e-tests (./target/debug/deps/e2e_force_close_position-88bd1a863778a3f7)	5m 35s
e2e-tests (./target/debug/deps/e2e_force_close_settled_channel-bd993f9137631fa8)	5m 49s
e2e-tests (./target/debug/deps/e2e_open_position-e2f208a74698c7c8)	5m 1s
e2e-tests (./target/debug/deps/e2e_open_position_small_utxos-ed645e43795c263d)	5m 52s
e2e-tests (./target/debug/deps/e2e_open_position_with_external_funding-bcdab6541eaf4d9f)	5m 19s
e2e-tests (./target/debug/deps/e2e_reject_offer-92fd09de067867c2)	5m 6s
e2e-tests (./target/debug/deps/e2e_resize_position-3d43edd8eda732e4)	6m 2s
e2e-tests (./target/debug/deps/e2e_restore_from_backup-cc36740cbae94865)	5m 34s
e2e-tests (./target/debug/deps/e2e_rollover_position-8d2b72956de38f7e)	5m 59s
e2e_tests_check	1s
	2h 1m 55s

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