Issue with custom keyboard height when toggle inputView in iOS 26 beta.

Issue Description: When toggling between the system keyboard and a custom input view, the keyboard height reported in subsequent keyboard notifications becomes incorrect!!! specifically missing the predictive text/suggestion bar height.

Environment:

• Device: iPhone 11
• Expected keyboard height: 346pt
• Actual reported height: 301pt (missing 45pt suggestion bar)

Reproduction Steps:

1. Present system keyboard → Height correctly reported as 346pt

1. Switch to custom input view → Custom view displayed

1. Switch back to system keyboard(no suggestion bar) → Height correctly reported as 301pt

1. Trigger keyboard frame change → Height still incorrectly reported as 301pt despite suggestion bar being visible

Expected Behavior: Keyboard height should consistently include the suggestion bar height (346pt total).

Actual Behavior: After switching from custom input view, keyboard height excludes suggestion bar height (301pt instead of 346pt).

key code

private func bindEvents() {
    customTextField.toggleInputViewSubject.sink { [weak self] isShowingCustomInput in
        guard let strongSelf = self else {
            return
        }
            
        if isShowingCustomInput {
            strongSelf.customTextField.inputView = strongSelf.customInputView
            strongSelf.customInputView.frame = CGRect(x: 0, y: 0, width: strongSelf.view.frame.size.width, height: strongSelf.storedKeyboardHeight)
        } else {
            strongSelf.cusTextField.inputView = nil
        }
            
        strongSelf.customTextField.reloadInputViews()
        strongSelf.customTextField.becomeFirstResponder()
    }.store(in: &cancellables)
}