[Remote Compose M3] Update RemoteCircularProgressIndicator stroke width defaults

Updates RemoteCircularProgressIndicator stroke width API:
- Add DefaultStrokeWidth (12dp) as default stroke width.
- largeStrokeWidth(screenSize) and smallStrokeWidth(screenSize) take
  a screenSize RemoteDp parameter to compute stroke width.
- Keep SmallScreenBreakpoint internal.
- Improve gap calculation using chord ratio trigonometry.

Relnote: "Updated `RemoteCircularProgressIndicator` to default to `RemoteProgressIndicatorDefaults.DefaultStrokeWidth` (12.rdp) and exposed `largeStrokeWidth(screenSize)` and `smallStrokeWidth(screenSize)` in `RemoteProgressIndicatorDefaults`."
Bug: 544641912
Test: ./gradlew :wear:compose:remote:remote-material3:checkApi :wear:compose:remote:remote-material3:lint
Change-Id: I1f16ed52992f145be2eaa4073385e26cf59447b0