[FR] make end of squiggly progress bar round

[BandanSaowarot]

Is your feature request related to a problem? Please describe. Yes, the wavy progress bar of this app has a seam and it's end isn't rounded.

Describe the solution you'd like Improve the design of the wavy peogress bar, it's end should be rounded and seamlessly.

Describe alternatives you've considered This request includes the default progress bar changing, see a screenshot for an example on what will be changed.

Additional context

• [x] I will open one issue per request, follow the issue format and will add [FR] to the start of my issue title, and I acknowledge that if I don't follow the format, my issue might get closed without further explanation.

[nift4]

adding to this that the rounded start does not seem to work too well either and sometimes a sharp start peeks out of it