Fix styling for vault cipher list scroller (#2693)

- following recent change in structure, with `<app-vault-ciphers>`, the flex styles were one level too high. retargets the selector to the first child `<div>`

apps/desktop/src/scss/vault.scss

@@ -15,7 +15,7 @@ app-root {
   height: 100%;
   display: flex;
 
-  > .items,
+  > .items > div,
   > .details,
   > .logo {
     display: flex;