Reduce flakiness in explorer/apps/repositories.spec.ts (rancher#12445)

* fix aftereach hook in explorer apps test

* tweak explorer repo clean up logic

* fix linting errors

cypress/e2e/tests/pages/explorer/apps/repositories.spec.ts

@@ -56,7 +56,13 @@ describe('Apps', () => {
 
         // Ensure this runs after an attempt, rather than all attemps (`after` only runs once after all cypress retries)
         afterEach(() => {
-          reposToDelete.forEach((r) => cy.deleteRancherResource('v1', 'catalog.cattle.io.clusterrepos', r));
+          for (const repo of reposToDelete) {
+            cy.deleteRancherResource('v1', 'catalog.cattle.io.clusterrepos', repo, false).then((res: Cypress.Response<any>) => {
+              if (res.status === 201) {
+                reposToDelete.splice(reposToDelete.indexOf(repo), 1);
+              }
+            });
+          }
         });
       });