[iOS] Slider does not apply step

[vicocz]

No description provided.

[Copilot]

Pull Request Overview

This PR addresses an issue with the iOS slider not applying its step value by adding a new event subscription for value changes and an event handler to round the new value.

• Added subscription to platformView.ValueChanged in ConnectHandler
• Added corresponding unsubscription and a new OnControlValueChanged event handler in DisconnectHandler
• Ensured that the slider value is rounded via SetAndRoundNewValue

Comments suppressed due to low confidence (1)

BrickController2/BrickController2.iOS/UI/CustomHandlers/ExtendedSliderHandler.cs:27

• Consider unsubscribing the TouchDown event in DisconnectHandler to maintain symmetry with other event subscriptions and to prevent potential memory leaks if the event subscription is no longer needed.

platformView.TouchDown += StartTrackingTouch;