Unknown part types should be treated as content (return true)
to match parity with the existing message-builder implementation.
Using continue would incorrectly mark messages with unknown part
types as empty, triggering false recovery.
- isTodo: allow optional id to match Todo interface, preventing
todos without ids from being silently dropped
- messageHasContentFromSDK: treat unknown part types as empty
(continue) instead of content (return true) for parity with
existing storage logic
- readMessagesFromSDK in recover-empty-content-message-sdk: wrap
SDK call in try/catch to prevent recovery from throwing
YeonGyu-Kim