When video has unknown progress it shrinks the container bar

In Video Player if it doesn't know the progress it does this:

<img width="745" height="104" alt="Image" src="https://github.com/user-attachments/assets/58802b49-fc7c-4b9a-8200-ea387164fdb2" />

```
VideoPlayer https://devstreaming-cdn.apple.com/videos/streaming/examples/bipbop_adv_example_hevc/master.m3u8
```