Implement review comments for !11963 from @filipa.

- Disable an ESLint check rather than work around it (by
  converting `OAuthRememberMe` from a regular class to a
  static class.

- Scope `$` calls inside `OAuthRememberMe`

app/assets/javascripts/dispatcher.js

@@ -128,7 +128,7 @@ import OAuthRememberMe from './oauth_remember_me';
         case 'sessions:new':
           new UsernameValidator();
           new ActiveTabMemoizer();
-          new OAuthRememberMe({ container: $("#remember_me") }).bindEvents();
+          new OAuthRememberMe({ container: $(".omniauth-container") }).bindEvents();
           break;
         case 'projects:boards:show':
         case 'projects:boards:index':

app/assets/javascripts/oauth_remember_me.js

@@ -12,13 +12,14 @@ export default class OAuthRememberMe {
   }
   bindEvents() {
-    this.container.on('click', this.constructor.toggleRememberMe);
+    $('#remember_me', this.container).on('click', this.toggleRememberMe);
   }
-  static toggleRememberMe(event) {
+  // eslint-disable-next-line class-methods-use-this
+  toggleRememberMe(event) {
     const rememberMe = $(event.target).is(':checked');
-    $('.oauth-login').each((i, element) => {
+    $('.oauth-login', this.container).each((i, element) => {
       const href = $(element).attr('href');
       if (rememberMe) {