fix：修改弹窗搜索框边距属性

lib/country_code_picker.dart

@@ -386,6 +386,7 @@ class CountryCodePickerState extends State<CountryCodePicker> {
           hideSearch: widget.hideSearch,
           closeIcon: widget.closeIcon,
           flagDecoration: widget.flagDecoration,
+          searchPadding: widget.searchPadding,
         );
       },
     );

lib/src/bottom_sheet.dart

@@ -28,6 +28,8 @@ class SelectionBottomSheet extends StatefulWidget {
   /// elements passed as favorite
   final List<CountryCode> favoriteElements;
 
+  final EdgeInsetsGeometry searchPadding;
+
   SelectionBottomSheet(
     this.elements,
     this.favoriteElements, {
@@ -46,6 +48,7 @@ class SelectionBottomSheet extends StatefulWidget {
     this.barrierColor,
     this.hideSearch = false,
     this.closeIcon,
+    this.searchPadding = const EdgeInsets.symmetric(horizontal: 24),
   })  : searchDecoration = searchDecoration.prefixIcon == null
             ? searchDecoration.copyWith(prefixIcon: const Icon(Icons.search))
             : searchDecoration,
@@ -93,7 +96,7 @@ class _SelectionBottomSheetState extends State<SelectionBottomSheet> {
               ),
               if (!widget.hideSearch)
                 Padding(
-                  padding: const EdgeInsets.symmetric(horizontal: 24),
+                  padding: widget.searchPadding,
                   child: TextField(
                     style: widget.searchStyle,
                     decoration: widget.searchDecoration,