fix: Avoid Select clear icon overlap with selections (#20914)

components/select/style/multiple.less

@@ -28,6 +28,10 @@
     }
   }
 
+  &.@{select-prefix-cls}-allow-clear .@{select-prefix-cls}-selector {
+    padding-right: @font-size-sm + @control-padding-horizontal;
+  }
+
   // ======================== Selections ========================
   .@{select-prefix-cls}-selection-item {
     position: relative;