Remove "not spec compliant" note from Nip47Transaction

[Dunsin-cyber]

Since NIP-47 PR #1913 has been merged, the accepted status for hold invoices is now officially part of the spec. We can safely remove the "not spec compliant" note from the Nip47Transaction type.

js-sdk/src/nwc/types.ts

Line 156 in 395a550

| "accepted" /* accepted for hold invoices - NOTE: not spec compliant yet */;