Remove signature btn html and add padding to ToolbarRichTextWebBuilder

lib/features/composer/presentation/composer_view_web.dart

@@ -64,9 +64,7 @@ class ComposerView extends GetWidget<ComposerController>
                     Expanded(child: Column(
                         children: [
                           _buildAttachmentsWidget(context),
-                          ToolbarRichTextWebBuilder(
-                            richTextWebController: controller.richTextWebController,
-                            padding: const EdgeInsets.only(left: 20, top: 8, bottom: 8)),
+                          ToolbarRichTextWebBuilder(richTextWebController: controller.richTextWebController),
                           buildInlineLoadingView(controller),
                           _buildEditorForm(context)
                         ]

lib/features/composer/presentation/widgets/toolbar_rich_text_builder.dart

@@ -36,7 +36,7 @@ class ToolbarRichTextWebBuilder extends StatelessWidget with RichTextButtonMixin
       final opacity = codeViewEnabled ? 0.5 : 1.0;
 
       return Container(
-        padding: padding,
+        padding: padding ?? const EdgeInsets.only(left: 20, top: 8, bottom: 8),
         alignment: Alignment.centerLeft,
         child: Wrap(
             crossAxisAlignment: WrapCrossAlignment.center,