Move confirm notification spec file

https://youtrack.weseek.co.jp/issue/GW-7728
- Move confirm-notification.spec.ts to 20-basic-feature
- Remove folder 80-notification
- Update spec- group

.github/workflows/reusable-app-prod.yml

@@ -180,7 +180,7 @@ jobs:
       fail-fast: false
       matrix:
         # List string expressions that is comma separated ids of tests in "test/cypress/integration"
-        spec-group: ['10', '20', '21', '30', '40', '60', '80']
+        spec-group: ['10', '20', '21', '30', '40', '60']
 
     services:
       mongodb: