feat: recover poll activations within original round budgets

internal/storage/mysql/workflow_signal_source.go

@@ -44,6 +44,23 @@ func readWorkflowSignalWait(ctx context.Context, tx *sql.Tx, g *workflowGraph, r
 	if err != nil {
 		return w, err
 	}
+	base, err := workflowActivationOrigin(ctx, tx, g, row)
+	if err != nil {
+		return w, err
+	}
+	w.activated = base.started
+	if base.sequence > 1 {
+		original := *row
+		original.view.ActivationID = &base.id
+		original.input = base.input
+		initial, err := readWorkflowSignalWait(ctx, tx, g, &original)
+		if err != nil {
+			return w, err
+		}
+		if initial.correlation != w.correlation {
+			return w, workflowSourceError("SIGNAL_RECOVERY_CORRELATION_INVALID")
+		}
+	}
 	if name == nil || version == nil {
 		return w, workflowSourceError("SIGNAL_WAIT_UNVERIFIED")
 	}