Improve IdlePicker's implementation

## Description

The current implementation of IdlePicker, though it works as intended, is sub-optimal. As of now, it calls the `render` method five times, in some cases, when picking a new value. This happens as a workaround to some issues that occurred while extending the `rc-slider` external component with handle and track animations.

The logic of the component should be changed so that the superfluous renders of different values when picking a new value no longer occurs.

## Acceptance Criteria

- [ ] IdlePicker retains its current correct behavior.
- [ ] Superfluous renders when picking a value are avoided.
- [ ] Allow the value to be completely controlled, instead of having a default value

Start by locating the IdlePicker component and its integration with the rc-slider handle and track animations. Trace the render calls when selecting a value, then verify that current behavior is preserved, superfluous renders are removed, and the value can be fully controlled instead of using a default.

Written by the indexing model from the issue text.