Moved LanguageToolMistakePopup fields up

for them to be before the constructor.

lib/utils/mistake_popup.dart

@@ -41,16 +41,6 @@ class MistakePopup {
 
 /// Default mistake window that looks similar to LanguageTool popup
 class LanguageToolMistakePopup extends StatelessWidget {
- /// [LanguageToolMistakePopup] constructor
- const LanguageToolMistakePopup({
- super.key,
- required this.popupRenderer,
- required this.mistake,
- required this.controller,
- required this.mistakePosition,
- this.maxHeight = double.infinity,
- });
-
  /// Renderer used to display this window.
  final PopupOverlayRenderer popupRenderer;
 
@@ -68,6 +58,16 @@ class LanguageToolMistakePopup extends StatelessWidget {
  /// [mistakePosition] and the furthest border of the layout constraints.
  final double maxHeight;
 
+ /// [LanguageToolMistakePopup] constructor
+ const LanguageToolMistakePopup({
+ super.key,
+ required this.popupRenderer,
+ required this.mistake,
+ required this.controller,
+ required this.mistakePosition,
+ this.maxHeight = double.infinity,
+ });
+
  @override
  Widget build(BuildContext context) {
  const _borderRadius = 10.0;