Support exporting trait default fns using a fn without a block #80

Job	Run time
collect-crates	13s
test-crate (packages/tokens)	1m 7s
test-crate (packages/macros)	27s
test-crate (examples/fungible-blocklist)	58s
test-crate (packages/test-utils/event-assertion)	45s
test-crate (packages/contract-utils)	1m 1s
test-crate (examples/fungible-capped)	53s
test-crate (examples/fungible-vault)	57s
test-crate (examples/merkle-voting)	56s
test-crate (examples/fungible-allowlist)	57s
test-crate (examples/fungible-merkle-airdrop)	55s
test-crate (examples/nft-access-control)	59s
test-crate (examples/nft-consecutive)	1m 1s
test-crate (examples/multisig/account)	59s
test-crate (examples/fungible-pausable)	1m 1s
test-crate (examples/ownable)	54s
test-crate (examples/pausable)	57s
test-crate (examples/nft-enumerable)	1m 1s
test-crate (examples/nft-sequential-minting)	56s
test-crate (examples/nft-royalties)	54s
test-crate (packages/accounts)	1m 7s
test-crate (examples/multisig/ed25519-verifier)	57s
test-crate (examples/multisig/webauthn-verifier)	57s
test-crate (examples/sac-admin-wrapper)	1m 3s
test-crate (packages/access)	57s
test-crate (examples/sac-admin-generic)	54s
test-crate (examples/multisig/threshold-policy)	52s
test-crate (examples/multisig/spending-limit-policy)	53s
test-crate (examples/upgradeable/v2)	52s
test-crate (examples/upgradeable/v1)	56s
test-crate (packages/test-utils/default-impl-macro-test)	55s
test-crate (examples/upgradeable/upgrader)	49s
	29m 3s

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