fix(wallet-mobile): offline crashes (#3664)

Author: jorbuedo

apps/wallet-mobile/src/features/WalletManager/common/hooks/useBestBlock.tsx

@@ -11,7 +11,15 @@ export const useBestBlock = ({options}: {options?: UseQueryOptions<Chain.Cardano
     retry: 3,
     retryDelay: 1_000,
     queryKey: [network, 'tipStatus'],
-    queryFn: () => networkManager.api.bestBlock(),
+    queryFn: () =>
+      networkManager.api.bestBlock().catch(() => ({
+        // TODO: Without this it break when offline. Needs better fixing
+        epoch: 510,
+        slot: 130081,
+        globalSlot: 135086881,
+        hash: 'ab0093eb78bcb0146355741388632eb50c69407df8fa32de85e5f198d725e8f4',
+        height: 10850697,
+      })),
     ...options,
   })
 

apps/wallet-mobile/src/yoroi-wallets/hooks/index.ts

@@ -440,7 +440,10 @@ export const useFrontendFees = (
     suspense: true,
     queryKey: [wallet.id, 'frontend-fees'],
     ...options,
-    queryFn: () => wallet.api.getFrontendFees(),
+    queryFn: () =>
+      wallet.api.getFrontendFees().catch(() => ({
+        // TODO: Without this it break when offline. Needs better fixing
+      })),
   })
 
   return {