fix(radio-group): use inline div to avoid extra spacing

Author: brandyscarney

core/src/components/radio-group/radio-group.scss

@@ -8,6 +8,10 @@ ion-radio-group {
   vertical-align: top;
 }
 
+.radio-group-wrapper {
+  display: inline;
+}
+
 // Radio Group: Top
 // --------------------------------------------------
 

core/src/components/radio-group/radio-group.tsx

@@ -298,7 +298,7 @@ export class RadioGroup implements ComponentInterface {
           Without the wrapper, the children radio will fire the blur event
           on focus, instead of waiting for them to be blurred.
         */}
-        <div>
+        <div class="radio-group-wrapper">
           <slot></slot>
         </div>
       </Host>