store the ed25519KeyPair temp key too on storage under 'identityKey'

main.js

@@ -1201,6 +1201,7 @@ async function sessionGenerateKeyPair(event, seed) {
     const x25519KeyPair = {
       pubKey: prependedX25519PublicKey.buffer,
       privKey: x25519SecretKey.buffer,
+      ed25519KeyPair,
     };
 
     // null as first parameter to indivate no error

ts/window.d.ts

@@ -99,6 +99,8 @@ declare global {
     GroupBuffer: any;
     SwarmPolling: SwarmPolling;
     owsDesktopApp: any;
-    sessionGenerateKeyPair: (seed: ArrayBuffer) => Promise<{ pubKey: ArrayBufferLike;  privKey: ArrayBufferLike; }>;
+    sessionGenerateKeyPair: (
+      seed: ArrayBuffer
+    ) => Promise<{ pubKey: ArrayBufferLike; privKey: ArrayBufferLike }>;
   }
 }