fix: 🐛 Fix Select ellipsis bug of Firefox in another way (#22101)

* 🐛 Fix Select ellipsis bug in Firefox by another way

close #22017

revert #22033

* Update components/select/style/single.less

Co-authored-by: 二货机器人 <smith3816@gmail.com>

components/select/style/single.less

@@ -45,6 +45,7 @@
     .@{select-prefix-cls}-selection-placeholder::after {
       display: inline-block;
       width: 0;
+      visibility: hidden;
       content: '\a0';
     }
   }