[Docs] Do not highlight wrong onBegin transition (#4361)

## Description

I've noticed that arrow leading towards `onFinalize` from `onBegin` even
if handler activated. This PR fixes this issue.

### Before


https://github.com/user-attachments/assets/3b35e8e1-137f-4506-bf91-1daa2f75e3c2

### After


https://github.com/user-attachments/assets/8050063e-31ea-4f16-80d9-9deec1780704

## Test plan

Play with example

Author: m-bert

packages/docs-gesture-handler/src/examples/CallbacksFlowExamples/GestureCallbacksExample.tsx

@@ -150,7 +150,6 @@ function GestureCallbacksDiagram() {
         // let the onDeactivate pulse land first
         later(() => {
           fire('deactivate_finalize', 'onFinalize');
-          pulse('begin_finalize');
         }, 2 * CAUSAL_DELAY_MS);
       } else {
         pulse('onFinalize');