In relation to
[`internal#1281`](https://github.com/coder/internal/issues/1281)
Remove the `soft_limit` field from the `Feature` type and simplify
license limit handling. This change:
- Removes the `soft_limit` field from the API and SDK
- Uses the soft limit value as the single `limit` value in the UI and
API
- Simplifies warning logic to only show warnings when the limit is
exceeded
- Updates tests to reflect the new behavior
- Updates the UI to use the single limit value for display