fix(textinput): allow full placeholder display when width is 0

The early return check  incorrectly
truncated the placeholder to only 1 character when Width was 0.

Since the comment states 'if there is no width, the placeholder can be any
length', we should always show the full placeholder when Width is 0.

This removes the erroneous early return that was causing only the first
character of the placeholder to be visible.

Author: RoomWithOutRoof

textinput/textinput.go

@@ -751,11 +751,6 @@ func (m Model) placeholderView() string {
 	m.virtualCursor.SetChar(string(p[:1]))
 	v += m.virtualCursor.View()
 
-	// If the entire placeholder is already set and no padding is needed, finish
-	if m.Width() < 1 && len(p) <= 1 {
-		return styles.Prompt.Render(m.Prompt) + v
-	}
-
 	// If Width is set then size placeholder accordingly
 	if m.Width() > 0 {
 		// available width is width - len + cursor offset of 1