Fabric TextInput: prepareForRecycle leaves stale inputAccessoryViewButtonLabel (empty Done bar) #58952

Description

On Fabric (RN 0.85), RCTTextInputComponentView prepareForRecycle clears inputAccessoryView, inputAccessoryViewID, and _hasInputAccessoryView, but does not clear _backedTextInputView.inputAccessoryViewButtonLabel.

When a recycled view is remounted for a number/decimal/phone pad without inputAccessoryViewButtonLabel, updateProps diffs against the stale _props and may not re-assign the label. RCTNSStringFromString("") returns @"" (non-nil). setDefaultInputAccessoryView treats any non-nil label as "has a label":

BOOL containsInputAccessoryViewButtonLabel = inputAccessoryViewButtonLabel != nil;

So an unlabelled number pad on a recycled view shows an empty Done toolbar with an invisible button (reproduced on iOS 26.5 Simulator).

Suggested fix

In prepareForRecycle, also set:

_backedTextInputView.inputAccessoryViewButtonLabel = nil;

Alternatively, treat zero-length labels as unset in setDefaultInputAccessoryView (length == 0 → no accessory from the label path).

Environment

• react-native 0.85.x / Fabric
• iOS 26.5 Simulator