Currently QmlWeb has the two element types TextInput and TextArea. Their purpose is exactly the same as QtQuick's TextField and TextEdit. Change the names and adapt the API of the QtQuick types. TextInput and TextArea type names can be dropped.
This project is unfortunately no longer maintained. If a new maintainer wants to step up and take care, the project is archived here: https://invent.kde.org/unmaintained/qmlweb You can just clone it in your private namespace on invent.kde.org and if you have started to work on it and fixed/implemented something get it reviewed and the project unarchived. Sorry for the inconveniences.