- Update ResolverPlugin interface to allow resolve() to return undefined
- Modify CustomResolver to skip properties with undefined values
- Add test case for resolvers that return undefined
- Update existing tests to handle cases where no properties are resolved
This change makes the behavior more explicit when resolvers don't return a value,
which is particularly important for numeric aggregations where 0 might be a valid result.
- Moved the resolve method implementation from individual resolvers to the base Lossy class
- Updated initializer methods to accept a LosslessViewOne parameter
- Removed redundant resolve methods from LastWriteWins, TimestampResolver, CustomResolver, and AggregationResolver
- Ensured consistent behavior across all resolver implementations
- All tests passing with the refactored code