Restore old call of `QuillToolbarIconButton`

lib/src/widgets/toolbar/buttons/clear_format_button.dart

@@ -111,7 +111,6 @@ class QuillToolbarClearFormatButton extends StatelessWidget {
     return QuillToolbarIconButton(
       tooltip: tooltip,
       icon: Icon(iconData, size: iconSize * iconButtonFactor, color: iconColor),
-      isFilled: false,
       onPressed: _sharedOnPressed,
       afterPressed: afterButtonPressed,
     );

lib/src/widgets/toolbar/buttons/custom_button_button.dart

@@ -81,7 +81,6 @@ class QuillToolbarCustomButton extends StatelessWidget {
 
     return QuillToolbarIconButton(
       icon: options.icon ?? const SizedBox.shrink(),
-      isFilled: false,
       tooltip: tooltip,
       onPressed: () => _onPressed(context),
       afterPressed: afterButtonPressed,

lib/src/widgets/toolbar/buttons/history_button.dart

@@ -105,7 +105,6 @@ class QuillToolbarHistoryButtonState extends State<QuillToolbarHistoryButton> {
             ? iconTheme?.iconUnselectedColor ?? theme.iconTheme.color
             : iconTheme?.disabledIconColor ?? theme.disabledColor,
       ),
-      isFilled: false,
       onPressed: _updateHistory,
       afterPressed: afterButtonPressed,
     );

lib/src/widgets/toolbar/buttons/indent_button.dart

@@ -110,7 +110,6 @@ class QuillToolbarIndentButtonState extends State<QuillToolbarIndentButton> {
     return QuillToolbarIconButton(
       tooltip: tooltip,
       icon: Icon(iconData, size: iconSize * iconButtonFactor, color: iconColor),
-      isFilled: false,
       onPressed: _sharedOnPressed,
       afterPressed: afterButtonPressed,
     );

lib/src/widgets/toolbar/buttons/link_style2_button.dart

@@ -155,7 +155,6 @@ class _QuillToolbarLinkStyleButton2State
             ? (iconTheme?.iconSelectedColor ?? theme.primaryIconTheme.color)
             : (iconTheme?.iconUnselectedColor ?? theme.iconTheme.color),
       ),
-      isFilled: isToggled,
       onPressed: _openLinkDialog,
       afterPressed: afterButtonPressed,
     );

lib/src/widgets/toolbar/buttons/link_style_button.dart

@@ -147,7 +147,6 @@ class QuillToolbarLinkStyleButtonState
             ? (iconTheme?.iconSelectedColor ?? theme.primaryIconTheme.color)
             : (iconTheme?.iconUnselectedColor ?? theme.iconTheme.color),
       ),
-      isFilled: isToggled,
       onPressed: () => _openLinkDialog(context),
       afterPressed: afterButtonPressed,
     );

lib/src/widgets/toolbar/buttons/search/search_button.dart

@@ -118,7 +118,6 @@ class QuillToolbarSearchButton extends StatelessWidget {
         size: iconSize * iconButtonFactor,
         color: iconColor,
       ),
-      isFilled: false,
       onPressed: () => _sharedOnPressed(context),
       afterPressed: afterButtonPressed,
     );