Radio: support switching radio with keyborard in ff. Fixes #8198

Author: jikkai

packages/radio/src/radio-group.vue

@@ -74,8 +74,10 @@
             e.preventDefault();
             if (index === 0) {
               roleRadios[length - 1].click();
+              roleRadios[length - 1].focus();
             } else {
               roleRadios[index - 1].click();
+              roleRadios[index - 1].focus();
             }
             break;
           case keyCode.RIGHT:
@@ -84,8 +86,10 @@
               e.stopPropagation();
               e.preventDefault();
               roleRadios[0].click();
+              roleRadios[0].focus();
             } else {
               roleRadios[index + 1].click();
+              roleRadios[index + 1].focus();
             }
             break;
           default: