🐛 `ProgressBar` and `ProgressBar` are slightly different from their native counterparts

Both consume a lot of CPU energy just by existing.

When looking at their native counterparts, they have a design differences.

Progress bar lacks paused and error states:

```
ProgressBar.paused()
ProgressBar.error()
```

No files or tests are named. Start by locating the ProgressBar entry point and compare its behavior with the native counterparts; verify the reported CPU usage and determine how paused and error states should be represented. Done means the component supports both states and its idle resource use is addressed.

Written by the indexing model from the issue text.