Alternatively you can try to use Virtual keyboard API (not sure if it works in webview, but maybe worth checking). Though be careful with iOS since Safari (and I assume WKWebView) doesn't support this API at all...

With WebView it's a tricker, but theoretically it should be possible. You just need to read layout synchronously and forward it to JS somehow. Something that I wanted to explore, but didn't find time for that 🤔

Fortunately right now the codebase doesn't have so much workarounds and transition from iOS 16 till iOS 18 was pretty smooth (except cases where iOS itself had issues with keyboard management) 😊