Bump SDK bindings to 26.10.12-nightly (#7909)

* Bump SDK bindings to `26.10.12-nightly`

* Fix API breaks in SDK bindings

* Fix doc comment

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/MatrixClient.kt

@@ -410,7 +410,7 @@ interface MatrixClient : ClientUrlContentFetcher {
 
     /**
      * Deactivates the account on the homeserver, then destroys this client and deletes every local trace of the session.
-     * The password is only sent if the homeserver asks for re-authentication, and on failure the session is left untouched.
+     * On failure the session is left untouched.
      *
      * @param password the account password, required to confirm the deactivation.
      * @param eraseData whether the homeserver should also erase the messages the user sent.

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/encryption/EncryptionService.kt

@@ -123,6 +123,11 @@ interface EncryptionService {
  * A handle to reset the user's identity.
  */
 sealed interface IdentityResetHandle {
+    /**
+     * The value of the session key given by the homeserver.
+     */
+    val session: String
+
     /**
      * Cancel the reset process and drops the existing handle in the SDK.
      */