fix: Make margin box size match quantity #6291

Job	Run time
formatting-dprint	16s
lint-commits	5s
generate-ffi	2m 52s
10101 node tests	6m 25s
e2e_tests_prepare	8m 36s
Format and lint Flutter code	46s
payout-curve	3m 56s
clippy	4m 5s
unit-tests	8m 29s
e2e-tests (./target/debug/deps/e2e_basic-3e318ff5142378f7)	4m 55s
e2e-tests (./target/debug/deps/e2e_close_position-5c01481372cf6cb9)	6m 37s
e2e-tests (./target/debug/deps/e2e_collaborative_close_channel-0ec47141c49ce93a)	5m 55s
e2e-tests (./target/debug/deps/e2e_collaborative_revert-631cbbaa02b3386b)	6m 3s
e2e-tests (./target/debug/deps/e2e_force_close_position-6836196314cf7660)	5m 38s
e2e-tests (./target/debug/deps/e2e_force_close_settled_channel-9efa1f725e22e250)	5m 50s
e2e-tests (./target/debug/deps/e2e_open_position-067f9b3139dfa86c)	4m 58s
e2e-tests (./target/debug/deps/e2e_open_position_small_utxos-ab34fd0c5720dd67)	5m 52s
e2e-tests (./target/debug/deps/e2e_open_position_with_external_funding-305584d0f00e2320)	5m 55s
e2e-tests (./target/debug/deps/e2e_reject_offer-65c828a439d9cb3c)	4m 59s
e2e-tests (./target/debug/deps/e2e_resize_position-f4195ad798a2b45e)	6m 2s
e2e-tests (./target/debug/deps/e2e_restore_from_backup-14e39151e02c2398)	5m 36s
e2e-tests (./target/debug/deps/e2e_rollover_position-7407339d1efd959a)	5m 43s
e2e_tests_check	1s
	1h 49m 34s

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