Log Activity Panic at Workflow Caller Level

[brucearctor]

Log Activity Panic at Workflow Caller Level

Fixes #2204.

• Fix: When an activity panics, the panic trace is now correctly logged at the workflow execution level. Previously, an ApplicationError with a PanicError structure was created securely, but the sdk-go package failed to intercept and log the panic traceback at the WorkflowTaskHandler level.
• Mechanism: Modified internal_event_handlers.go in handleActivityTaskFailed and handleLocalActivityMarker. The code now explicitly checks if the decoded error wraps a PanicError. If it does, a native logger.Error logs the associated fields (tagPanicError and tagPanicStack).
• Testing: Added new unit test TestActivityTask_ActivityPanics to internal/internal_task_handlers_test.go and verified against the full sdk-go test suite to check for correctness and absence of regressions.