[Glitch] Enable the eslint react/no-unknown-property rule

Port ee83d5c760 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/features/ui/components/confirmation_modal.jsx

@@ -59,7 +59,7 @@ class ConfirmationModal extends PureComponent {
           { onDoNotAsk && (
             <div className='confirmation-modal__do_not_ask_again'>
               <input type='checkbox' id='confirmation-modal__do_not_ask_again-checkbox' ref={this.setDoNotAskRef} />
-              <label for='confirmation-modal__do_not_ask_again-checkbox'>
+              <label htmlFor='confirmation-modal__do_not_ask_again-checkbox'>
                 <FormattedMessage id='confirmation_modal.do_not_ask_again' defaultMessage='Do not ask for confirmation again' />
               </label>
             </div>

app/javascript/flavours/glitch/features/ui/components/navigation_panel.jsx

@@ -66,7 +66,7 @@ class NavigationPanel extends Component {
     return (
       <div className='navigation-panel'>
         {banner &&
-          <div class='navigation-panel__banner'>
+          <div className='navigation-panel__banner'>
             {banner}
           </div>
         }