[source-braze] event_name in event_analytics is always null

### Connector Name

source-braze

### Connector Version

0.4.20

### What step the error happened?

During the sync

### Relevant information

When syncing from the `event_analytics` stream, the property `event_name` is always null.

`mysql> select * from events_analytics;`

| time | count | event_name | _airbyte_raw_id | _airbyte_extracted_at | _airbyte_meta |
|------------|-------|------------|--------------------------------------|----------------------------|-----------------|
| 2026-01-09 | 211 | NULL | 0208c602-63f7-4b2f-be3a-af2f735db302 | 2026-01-17 21:08:10.134000 | {"changes": []} |
| 2026-01-09 | 935 | NULL | 0367534e-7eb7-48c8-aa7e-1e97b3110fca | 2026-01-17 21:08:10.308000 | {"changes": []} |
| 2026-01-12 | 81 | NULL | 06fcb01e-64c1-4004-b33c-b9e630c8a690 | 2026-01-17 21:08:10.134000 | {"changes": []} |
| 2026-01-08 | 27 | NULL | 09aa1a00-5ffd-4e26-aa8b-8754694fac68 | 2026-01-17 21:08:10.134000 | {"changes": []} |
| 2026-01-16 | 5 | NULL | 0a6e690a-2916-4eac-bbf7-f91331561038 | 2026-01-17 21:08:09.971000 | {"changes": []} |
| 2026-01-02 | 836 | NULL | 0e722c1f-ce0d-4ab1-b930-b6f51a2ae9ae | 2026-01-17 21:08:10.307000 | {"changes": []} |
| 2026-01-13 | 1199 | NULL | 0ea6eed4-b80d-486f-b88d-1de67abae7d5 | 2026-01-17 21:08:10.308000 | {"changes": []} |
| 2026-01-13 | 213 | NULL | 0f3c0ee8-ae64-439b-9981-a38a67cc37d2 | 2026-01-17 21:08:09.758000 | {"changes": []} |
| 2026-01-16 | 28 | NULL | 10279850-b2b4-493e-a683-ea930eab9d72 | 2026-01-17 21:08:09.758000 | {"changes": []} |

### Relevant log output

```shell

```

### Contribute

- [x] Yes, I want to contribute

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**Internal Tracking:** https://github.com/airbytehq/oncall/issues/10954