Feature/saajan persona (#3)

* feat: add template based email content (html + plaintext fallback)

* feat: init saajan component

* feat: add aesthetic noise background and implement Saajan component in register and login

* feat: add post seal modal for vault

* refactor: add proper props interfaces

* refactor: expose props on ui components

* feat: add ssajan in lots of flows

* fix: remove render test with no value and add aria helper for btn identification

* refactor: update email notification to account for proper arguments

* refactor:  refactor E2E auth helper and mail parsing logic

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Co-authored-by: ramvignesh-b <ramvignesh-b@github.com>

frontend/src/hooks/useLetters.tsx

@@ -86,7 +86,7 @@ export function useLetters() {
     return {
       drafts: letters.filter((l) => l.status === "DRAFT"),
       kept: letters.filter((l) => l.type === "KEPT" && l.status === "SEALED"),
-      vault: letters.filter((l) => l.type === "VAULT"),
+      vault: letters.filter((l) => l.type === "VAULT" && l.status === "SEALED"),
       sent: letters.filter((l) => l.type === "SENT" && l.status === "SEALED"),
     };
   }, [letters]);