3 Scroll sometimes and setSelection() some kind of fix

[MarlonJD]

When there was no height, setSelection could not works properly. So I added height to

, and I added setTimeout(() => quilleditor.focus(), 1000);after setSelection.

Now you can just give height from main widget, like this

QuillHtmlEditor(
    controller: controller,
    minHeight:
        MediaQuery.of(context).size.height -
            300,
)

Also I tried to make unvisible 3 scroll.