feat: ionKnobMoveStart/End expose info on which knob is moving

### Prerequisites

- [X] I have read the [Contributing Guidelines](https://github.com/ionic-team/ionic-framework/blob/main/.github/CONTRIBUTING.md#creating-an-issue).
- [X] I agree to follow the [Code of Conduct](https://ionicframework.com/code-of-conduct).
- [X] I have searched for [existing issues](https://github.com/ionic-team/ionic-framework/issues) that already include this feature request, without success.

### Describe the Feature Request

You can have two knobs on an ion-range, and we have these two new events ionKnobMoveStart and ionKnobMoveEnd, but I can't figure out which knob got moved from the event. Please provide that info in the passed $event or somehow.

### Describe the Use Case

I have different behaviors for the two knobs in the range.

### Describe Preferred Solution

Probably in the range event detail, let us know which knob was moved.

### Describe Alternatives

I could do this with (touchstart) and (touchend), but those don't do the keyboard control, right?

### Related Code

_No response_

### Additional Information

_No response_