fix js/ts linter errors

Author: GamerGirlandCo

web_src/js/features/group.ts

@@ -7,7 +7,7 @@ export function initCommonGroup() {
     return;
   }
 
-  document.querySelector('.group.settings.options #group_name')?.addEventListener('input', function () {
+  document.querySelector('.group.settings.options #group_name')?.addEventListener('input', function (this: HTMLInputElement) {
     const nameChanged = this.value.toLowerCase() !== this.getAttribute('data-group-name').toLowerCase();
     toggleElem('#group-name-change-prompt', nameChanged);
   });

web_src/js/features/repo-new.ts

@@ -4,7 +4,6 @@ import {fomanticQuery} from '../modules/fomantic/base.ts';
 import {sanitizeRepoName} from './repo-common.ts';
 
 const {appSubUrl} = window.config;
-const $ = window.$;
 function initRepoNewTemplateSearch(form: HTMLFormElement) {
   const elSubmitButton = querySingleVisibleElem<HTMLInputElement>(form, '.ui.primary.button');
   const elCreateRepoErrorMessage = form.querySelector('#create-repo-error-message');