Values Showing Unavailable after Updating Home Assistant Core to 2026.3.3

### Is there an existing issue for this?

- [x] I have searched both the existing open issues & recently closed issues and did not find a duplicate of this issue.

### Version of the Tesla component

3.25.5

### Version of the Powerwall Gateway software

26.2.2.82f2d663

### Model

2

### Current Behavior

Logging this, so people are aware.

I've upgraded Home Assistant Core from **2026.2.3** to **2026.3.3**.
The integration of my Powerwall 2 stopped working. The values and configurable entities show as "Unavailable".

I rolled back my Home Assistant back to 2026.2.3, and everything went back to normal (working).

The errors I can find my my Home Assistant Core logs is the below.

`2026-03-23 10:09:03.960 ERROR (MainThread) [custom_components.tesla_custom] Timeout fetching tesla_custom data`

### Expected Behavior

Values should not show as Unavailable.

### Debug logs

```true
2026-03-23 10:09:03.960 ERROR (MainThread) [custom_components.tesla_custom] Timeout fetching tesla_custom data
```

### Anything else?

_No response_