tabbar text fix

[markdevocht]

Fix iOS 26 bottom tab item title layout on first paint

Context: On iOS 26, UITabBar item titles can be laid out wrong on the first pass (e.g. too low or clipped). Changing the selected tab corrects the layout. Using tabsAttachMode: 'together' alone does not fix it, so this is not only an afterInitialTab attach-order issue.

What changed

• One-time tab selection pass in RNNBottomTabsController: after the bar appears, programmatically set selectedIndex to each tab, then restore the initial index, inside UIView performWithoutAnimation.
• Runs on iOS 26+ only, once per controller (_rnnDidApplyInitialTabBarSelectionFix).
• Deferred with dispatch_async to the main queue so tab children are attached first.
• _rnnSuppressTabSelectionEvents: while cycling, skip BottomTabPressed / BottomTabSelected and return YES from shouldSelectViewController: so the cycle is not blocked by per-tab options (e.g. selectTabOnPress).
• No tabBar layoutIfNeeded in the loop; selection changes are enough.
• __weak RNNBottomTabsController *weakSelf for the async block (explicit type in .mm).

Tab bar appearance in init

• Single iOS 13+ path: configureWithOpaqueBackground, backgroundEffect = nil, systemBackgroundColor, scrollEdgeAppearance on iOS 15+, non-translucent (no separate iOS 26 configureWithDefaultBackground in this controller).

Files

• ios/RNNBottomTabsController.mm

How to verify

• Run the playground on an iOS 26.1 simulator with a bottom tabs root; tab titles should look correct before any manual tab change.
• Confirm there are no extra BottomTabSelected / BottomTabPressed events for the internal cycle; real user taps still emit as usual.