feat：SearchAppBar-①优化输入框样式②过滤表情输入

lib/widget/search_app_bar.dart

 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:flutter_clx_base/flutter_clx_base.dart';
 import 'package:flutter_clx_base/utils/string_util.dart';
 
@@ -110,6 +111,9 @@ class _SearchAppBarState extends State<SearchAppBar> {
                       maxLines: 1,
                       maxLength: widget.maxLength,
                       focusNode: _searchFocusNode,
+                      inputFormatters: [
+                        FilteringTextInputFormatter.deny(RegExp(regexEmoji())),
+                      ],
                       style: TextStyle(
                           fontSize: 14,
                           color: widget.inputTextColor ??
@@ -132,6 +136,7 @@ class _SearchAppBarState extends State<SearchAppBar> {
                       ),
                     ),
                   ),
+                  hGap5,
                 ],
               ),
             ),