[wip] update symbols etc

[derrickaw]

Please add a meaningful description for your change here

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[gemini-code-assist]

Summary of Changes

Hello @derrickaw, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request primarily focuses on updating the Go symbol definitions used by the frontend, reflecting a substantial evolution in the underlying Go SDK. It introduces a wide array of new features and refinements across various core functionalities, from execution and data handling to sophisticated state, timer, and triggering mechanisms. Concurrently, it ensures the frontend remains synchronized with these changes through automatic code generation and dependency updates.

Highlights

• Go Symbol Updates: Numerous new Go symbols have been added to go.g.yaml, indicating significant updates to the Go SDK's capabilities. These include new functionalities for worker binary building, cross-language operations, data sampling, file I/O, pipeline options, job management, and advanced state and timer management.
• State and Timer Management Enhancements: The update introduces new state types such as MultimapStateSpec and OrderedListStateSpec, along with corresponding state keys and data structures. Timer management has also been expanded with new event and processing time concepts and static timer IDs.
• Advanced Triggering Mechanisms: A comprehensive set of new triggering mechanisms has been added, including TriggerAfterAll, TriggerAfterAny, TriggerAfterEach, TriggerAfterEndOfWindow, TriggerAfterProcessingTime, and various other time and element-based triggers.
• Frontend Dependency and Code Generation Updates: The frontend components have been updated, including regenerated assets and data model serialization files (.g.dart). This also involves updates to Dart package dependencies as reflected in pubspec.lock and regenerated mock files for testing.
• Removal of TestStreamService Components: Several symbols related to TestStreamService have been removed, suggesting a refactoring or deprecation of this specific service within the Go SDK's exposed functionalities.

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