refactor: remove explicit type parameters from generic calls

[wolf31o2]

Summary by cubic

Refactored generic calls to rely on type inference, removing explicit type parameters across CBOR helpers and ledger tests. No functional changes.

• Refactors
  • Simplified generateAstJsonList and generateAstJsonMap calls in cbor/value.go.
  • Removed [common.MultiAssetTypeOutput] from common.NewMultiAsset calls in Mary and Babbage tests.
  • Dropped explicit type args from cbor.NewSetType in collateral, reference inputs, and required signers across Babbage and Conway tests.

^{Written for commit 4bdef62. Summary will update automatically on new commits.}

[cubic-dev-ai]

No issues found across 7 files