Revert "Remove empty clickable area behind radio button labels"

This reverts commit 87534c53.

docs/release-notes-player.txt

@@ -9,7 +9,6 @@ Player
 - Use z-index property for all elements
 - Fix the response status when re-entering the unit
 - Ignore blank pages when calculating the response progress
-- Remove empty clickable area behind radio labels
 - Fix position of virtual keyboard for text areas
 - Rename marking tag of text to 'aspect-marked'
 - Restore the state of likert elements when re-entering a unit

projects/common/ui-elements/radio/radio-button-group.component.ts

@@ -40,7 +40,7 @@ import { RadioButtonGroupElement } from './radio-button-group-element';
     </div>
   `,
   styles: [
-    '::ng-deep app-radio-button-group .mat-radio-label {white-space: normal; width: auto; max-width: 100%;}',
+    '::ng-deep app-radio-button-group .mat-radio-label {white-space: normal}',
     '::ng-deep app-radio-button-group .mat-radio-label .mat-radio-label-content {padding-left: 10px}',
     'mat-radio-button {margin-bottom: 6px; margin-right: 15px}',
     '.error-message { font-size: 75% }',