Prompt update on MobileCoin enclave failure.

app/src/main/java/org/thoughtcrime/securesms/keyvalue/PaymentsValues.kt

@@ -68,6 +68,7 @@ internal class PaymentsValues internal constructor(store: KeyValueStore) : Signa
     get() = getBoolean(USER_CONFIRMED_MNEMONIC_LARGE_BALANCE, false)
     set(value) = putBoolean(USER_CONFIRMED_MNEMONIC_LARGE_BALANCE, value)
   private val liveCurrentCurrency: MutableLiveData<Currency> by lazy { MutableLiveData(currentCurrency()) }
+  private val enclaveFailure: MutableLiveData<Boolean> by lazy { MutableLiveData(false) }
   private val liveMobileCoinLedger: MutableLiveData<MobileCoinLedgerWrapper> by lazy { MutableLiveData(mobileCoinLatestFullLedger()) }
   private val liveMobileCoinBalance: LiveData<Balance> by lazy { Transformations.map(liveMobileCoinLedger) { obj: MobileCoinLedgerWrapper -> obj.balance } }
 
@@ -214,6 +215,15 @@ internal class PaymentsValues internal constructor(store: KeyValueStore) : Signa
     return liveCurrentCurrency
   }
 
+  fun setEnclaveFailure(failure: Boolean) {
+    enclaveFailure.postValue(failure)
+  }
+
+  fun enclaveFailure(): LiveData<Boolean> {
+    return enclaveFailure
+  }
+
+
   fun showAboutMobileCoinInfoCard(): Boolean {
     return store.getBoolean(SHOW_ABOUT_MOBILE_COIN_INFO_CARD, true)
   }