Radio: fix checked state when browser go back (#21250)

packages/radio/src/radio-button.vue

@@ -24,6 +24,7 @@
       tabindex="-1"
       @focus="focus = true"
       @blur="focus = false"
+      autocomplete="off"
     >
     <span
       class="el-radio-button__inner"

packages/radio/src/radio.vue

@@ -34,6 +34,7 @@
         :name="name"
         :disabled="isDisabled"
         tabindex="-1"
+        autocomplete="off"
       >
     </span>
     <span class="el-radio__label" @keydown.stop>