Add comments to explain how the secrets could be uncached

playwright/e2e/settings/encryption-user-tab/recovery.spec.ts

@@ -109,6 +109,8 @@ test.describe("Recovery section in Encryption tab", () => {
         await checkDeviceIsConnectedKeyBackup(page, "2", true);
     });
 
+    // This case shouldn't happen but we have seen cases where the secrets gossiping failed or shared partial secrets when verified with another device.
+    // To simulate this case, we need to delete the cached secrets in the indexedDB
     test(
         "should enter the recovery key when the secrets are not cached",
         { tag: "@screenshot" },

src/components/views/settings/encryption/RecoveryPanel.tsx

@@ -21,6 +21,7 @@ import { SettingsSubheader } from "../SettingsSubheader";
  * - `loading`: We are checking the backup, the recovery and the secrets.
  * - `missing_backup`: The user has no backup.
  * - `secrets_not_cached`: The user has a backup but the secrets are not cached.
+ *                         This shouldn't happen but we have seen cases where the secrets gossiping failed or shared partial secrets when verified with another device.
  * - `good`: The user has a backup and the secrets are cached.
  */
 type State = "loading" | "missing_backup" | "secrets_not_cached" | "good";