Improve session recovery screens (#2657)

* Improve enter recovery key screen UI

* Add instructions to reset the encryption of the logged in account.

* Update screenshots

* Fix maestro flow

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Co-authored-by: ElementBot <benoitm+elementbot@element.io>

.maestro/tests/account/verifySession.yaml

@@ -6,7 +6,7 @@ appId: ${MAESTRO_APP_ID}
     id: "verification-recovery_key"
 - inputText: ${MAESTRO_RECOVERY_KEY}
 - hideKeyboard
-- tapOn: "Confirm"
+- tapOn: "Continue"
 - extendedWaitUntil:
     visible: "Device verified"
     timeout: 10000