CRITICAL: Powerwall export and grid charging controls missing after upgrading to HA 2026.4.2 - Tesla API change???

### 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

26.10.0 d2bd1b3b

### Model

2

### Current Behavior

After upgrading HA to 2026.4.2 from 2026.3.3 the integration is no longer providing the 'Energy exports' (xxxx_energy_exports) or 'Grid Charging' (xxxx_grid_charging) controls.

I even tried removing the integration, restarting HA and re-adding it which of course required me to re-authenticate my account. Still the same. I also tried downgrading to HA 2026.3.3 and restoring from my pre-upgrade backup but still the same. This is very strange as the controls were present and working before the upgrade.

### Expected Behavior

I expected that after the upgrade things would work as they did before and that all entities would be present and functional.

### Debug logs

```true
Debug logs attached are from 2026.4.2, which is what I am now running.
```

### Anything else?

[home-assistant_tesla_custom_2026-04-16T09-14-38.716Z.log](https://github.com/user-attachments/files/26779191/home-assistant_tesla_custom_2026-04-16T09-14-38.716Z.log)