Start fixing scrolling containing entries

[andydotxyz]

When setting up an entry do not expose a scroll container unless multiline or scrolling is specified.
This is the best we can do until a future version of event handling that can reflect on object state not existance.

Fixes #1939

TODO

• Reconfigure if the wrap type changes

Checklist:

• Tests included.
• Lint and formatter run with no errors.
• Tests all pass.

[Jacalz]

This is working as expected. Thank you very much 👍
I know that this is a draft, I just popped in a little comment while at it 😅

[Jacalz]

Couldn't this just be moved into the if statement on line 169?

[andydotxyz]

I don't know if it is useful, but I was playing with this code to test the changing state :)

func main() {
	a := app.New()
	w := a.NewWindow("Hello")

	e1 := widget.NewEntry()
	e1.Wrapping = fyne.TextWrapOff
	e2 := widget.NewEntry()
	e2.Wrapping = fyne.TextWrapOff
	e3 := widget.NewEntry()
	e3.Wrapping = fyne.TextWrapOff

	off := true
	w.SetContent(container.NewVBox(container.NewScroll(
		container.NewVBox(e1, e2, e3),
	),
	widget.NewButton("Scroll", func() {
		if off {
			e2.Wrapping = fyne.TextTruncate
		} else {
			e2.Wrapping = fyne.TextWrapOff
		}
		off = !off
		e2.Refresh()
	}),
	))

	w.ShowAndRun()
}